Seems like there are a lot of them out there. Usually go through a binge on one for a while then move on to another. 

Some of the past have been Dane Cook, Jim Jefferies and lately mr story time Bert Kreischer. 

Probably would have to be Dylan Moran or Frankie Boyle. Two guys with very different styles but basically talk about the same stuff, imo. I also do enjoy most of Bill Burr's specials though.

And Bo Burnham is a genius, tyvm.

Hands down my favorite comedian has got to be Dave Chappelle.. and maybe im just biased cause he was the first comedian I ever really liked but his shit is pretty funny lol

Favourite comedian from the UK would be between Peter Kay and John Bishop. Don't know that many American comedians but one I find incredibly funny is Bill Burr.

MY favorite comedian is super easy choice, it's Fluffy!! (Gabriel Iglesias for you pendejos who do not know him)

The humor this guy has, the intonation and enthusiasm he has are just wonderful. also his wide range of vocalizations are a big add on and the colorful people of his crew just basically give him a host of material to chose from (e.g. the racist basket is so funny)

Goodness, but there are so many good ones to choose from!  I'm going to go old school though and pick one who hasn't been heard from in a long while. That would be Gallagher from back in the 80's. Politically irreverent comedy really gets me and who wouldn't love a sledge-o-matic?  Any comedy show you have to wear a rain coat to so your protected from pulverized fruit can't be all bad.

Don't see much of him anymore but I'd have to say Frankie Boyle closely followed by Jeff Dunham. Two completely different ends of the spectrum.