The above being said, let's take a look at some of the more common archetypes:
The Killer: They go by the name Solo, Samurai, Mercenary, Security Specialist, etc. They might worked for a Corporation, government, or as an independent contractor, but the bottom line is that they are trained to kill. They might go about it in a callous manner, or they might regret killing. But they are masters of various forms of violence however certain personalities tend to predominate the Cyberpunk frame of mind vs Post Cyberpunk.
Cyberpunk: the archetype of the Nihilistic Killer, hopped on drugs or booze of some form, living on the edge waiting for that one bullet to take them out (run into the ground in Hollywood in far too many films), not caring what will happen to them or those around them, and generally wanting to be released from the pain of existence. Most sane people would avoid a twit like this in a heartbeat, but film noir environments seem to be littered with them.
The Professional: Killing is just a job to them. They don't see the opposition as necessarily human, but just as another target. They study the target, it's habits, it's environs, select their weapons with care, set up the hit, preform the job, cover their tracks, then go home and worry about the next job, or simply to sit back and listen to music or whatever people normally do. They tend to be not as common in Cyberpunk settings, with all the other killer types looking at them as a person to look up too, emulate, fear, or try to take down.
Example: Bato or Motoko from Ghost In The Shell
The Wannabe/Mook: You've seen this type before. A gang-banger with a big gun, may or may not be hopped on something, and will wave the gun around to show who's boss. The wannabe usually has enough sense to backdown when faced with much bigger and nastier people. Mooks are the throwaways you tend to see in stories that the hero guns down for being stupid.
Example: Any drugged up gun wielding idiot from most hollywood or hong kong action films (not to mention real life).
Post Cyberpunk: As above with a few notable differences:
The Professional: This by in large is the most common style of Killer you will see in the post cyberpunk setting. Nihilists tend to draw all sorts of bad attention to themselves and usually the heroes are involved in removing said damaged individual from larger society in lethal (or non-lethal) ways. Mooks tend to fill the same function as above.
Medias: The Media of the Cyberpunk/Post-Cyberpunk era would be a recognizable mutation of Gumshoe Reporters, Freelancers, Bloggers/Vloggers, and Mainstream Media. No one trusts News organizations anymore per se. Too many times getting caught pushing shoddy stories for one reason or another (and savaging each other in the data-stream) has done in that concept pretty much permanently..
That being said, people will look at an organization and see how many credible media types they have under their banner, rather than the banner itself. This generates revenue with multimedia access memberships and the equivalent of Paypal donations for media personalities and reporters of their choice. The most successful 'Media-Corps' have learned to just act as a cross between a Internet company (data eats LOTS of bandwidth) and a contracting agency for reporters, providing backing to those who seem to be successful (usually in pay or research staff) but otherwise keeping hands off and letting the reporter go after what story they want.
Cyberpunk:
Freelancers: The freelancer is the most common media type that one would see in the Cyberpunk setting, working the local scene to get his/her three hots and a cot, or following up on a potential break through story to get noticed by the Datastream, increase hits and maybe get a contract. Will push things to the edge to get a good story. Typically addicted to caffeine and smokes. Had probably pissed off at least half-dozen collections of people depending on his beat by intention or omission. But willing to play the game and play it hard to get at what's real. People demand the truth. No, not The Truth (people are immediately suspicious of anything shouted from the rooftops anymore). 'Just The Facts' is a watchword. And whatever it takes to get the story out, as long as it's accurate, they'll do it. C.J. O'Reilly from Cyberpunk 2020 is a example of this
Tabs: Short for Tabloid Reporter (Yes, they still exist and will continue to exist), this reporter works for one of the TabStream clearinghouses on the Grid. They come in the flavor of Reporter (some of the TabStreams figured out that having real reporters on the Site lended Cred), Stalkerazzi (Paparazzi with cybercams, oh joy), Creative Writers (Elvis Is Risen with General Hideki Tojo in Yokohama!! Film at Eleven!!), & Dirtbags (think every bad stereotype of a video reporter and you'll find this guy).
Post Cyberpunk: Pretty much like the above, but with more access to ways to snoop on unsuspecting targets....er 'subjects'. The ethics are probably not much changed other than you have to fight in a even more decentralized Media environment. And the Net is Forever in storing what you do. Pick your stories wisely. Do your research. Death of Credibility is a keystroke away. Spider Jerusulem is a archtype for this sort of media
The Fixer: We all know the Fixer. The Person who Finds Stuff You Want, be it drugs, information, weapons, it all boils down to Getting Access to what's wanted. For a Price.
Cyberpunk: many techno-thrillers have these guys, usually as the main bad guy for the Hero to take, down, usually by rolling through his assorted colorful mooks like a starving wolf through a pork sandwich. Usually kitted out in bling (or at least very well dressed), and thinking they own the world. Usually not given credit for having a brain, which is a pity, because in order to build a criminal empire, you usually have to have some common sense, and the ability to think on your feet when the heat comes down. Usually creating a new drug, controlling drugs, sniffing drugs, testing drugs, and going into high finance or technology for 'legit money'. Usually end up dead from Traitorous Lt or some hackneyed explanation.
Post Cyberpunk: more often than not these will be Data-Brokers of some type as dealing drugs is for the Lower Wad Street Scum types don'cha know? Typically they will have several decker types on the payroll to look up what they need and can pull up ALL of your embarrassing information in short order, have a decent psych profile of you, and have made contingency plans to deal with you if you chose not to play along. They typically try the soft hand first if they think it will work...but do not cross them. They can make your lives hell if they so chose.
Police: The Thin Blue Line does not need to be elaborated much upon, as it is the subject of many crime movie stories and oodles of ideas.
Corporates: The Bane of Most Cyberpunk players, the Corporations are the monolithic faceless personification of 'The Man' in Cyberpunk stories and the major antagonist in most stories. Brutal, unethical, and willing to do anything to gain wealth and power.
In Post-Cyberpunk settings, most corporations aren't quite as vicious, but they will go quite far to obtain what they want, but will try to keep it out of the spotlight (bad press and all that, unless they control the press). People don't like thuggish companies on general principle, so the Corps have to be more circumspect.
