These are not my own, but rather from a user on one of the Shadowrun Living Communities I play in. — Arcology Expert Program (talk)
Street: Street etiquette is cool. It's aloof, gives off an "idgaf" attitude. It's varying degrees of anti-establishment. It's Billy Idol and Johnny Rotten sneering at the press; it's sexy and anti-authoritarian. When you're talking about criminal shit with street etiquette, you do it in a way that doesn't directly implicate other people.
Corporate: Corpo etiquette is all about cold-blooded advancement of one's career, within the context of corporate culture. Corporate etiquette people will identify "The Boss" in any situation, and will read which direction The Boss is going and immediately be the first in their wake. Eyes are always on The Boss. They will laugh the right amount at The Boss's jokes. Body posture is confident within one's area of authority, but always seeking approval of higher authority. Corporate people are expected to undermine weak competition within their own company, usually through snide comments around the water cooler or in the executive washroom; failure to do so can be perceived as "weak" or lacking the "killer instinct" to get ahead.
High Society: Lordly and aristocratic are the watchwords here. High Society operates within the very small peak of a very large pyramid; there are echelons of things they care about. Things happening at the base of the pyramid are delegated to henchmen, lackeys, assistants, valets, and chauffeurs in the middle. This one is a delicate game of advancing oneself and destroying one's enemies, without disturbing the water that the rest of High Society is sailing on. It operates within a subtle web of rumors, scandal, and leverage.
Merc or Military: Merc and Military etiquette is bravado, machismo, braggadocious, locker room talk. It's "I don't care who he is, I'll kick his ass!" It's rough-&-tumble, roughhousing with the boys, and often leans politically conservative. At the same time, there's concern for one's personal honor, oaths of duty, and promises made on the battlefield. Merc etiquette will shift between rigid, ramrod straight attention, eyes forward unblinking, never flinching or backing up even when people are screaming bloody murder in your face and shit is exploding around you, then relaxing like you're in a bar or locker room or gun range when you're off-duty. Merc etiquette has little patience for quitters and cowards.