Rimfire, I clean every 50 rounds for the first 200-300, and then the bore/chamber does not get touched unless I have a drop in accuracy. I have a 10/22 that has been cleaned once since being broken in 10 years and about 3000-3500 rounds ago.
Shotguns, I clean a lot. I think I have my past ownership of a 870 to thank for this. Hell, I'll get nervous and pull all my shotguns out and wipe them down with a silicon cloth every few months if I'm not shooting them.
Handguns, meh. Whenevs. They do get a quick wipedown after the range usually. wipe the vaseline/carmex/burts bees off the flashlight lens, wipe the excess crap off of it, wipe off the feed ramp and remove fingerprints from the metal.
AR/AKs? Pretty much the same treatment as my handguns. Maybe worse, as they get rattlecanned and I dont have to worry about fingerprints. Every 1000-2000 rounds they get a good cleaning. Breakin as per manufacturer/barrel recommendations.
Bolt guns? They get some love usually, but still, wipedown after the range, deep clean every 500ish rounds, unless they get dropped in the mud, which happens more than I care to admit. My x39 ruger ranch has been planted like I'm landing on the moon many times, due to dumb shit, never intentional. It gets cleaned out more than most. Sometimes just in a puddle or pond, then hosed down with CLP and a bore mop when I get back to the truck.