I need to check out Jeselnik's new Netflix special, because he's legit. However, I saw a few clips and I feel like he might be hitting his wall of "being the most offensive". A few jokes I feel like I already heard him tell. Hope it delivers.
Everyone here will likely agree that guys like Chappelle, Carlin, Segura and such, are near the top. A few that I don't see listed often, that I really like a lot: TJ Miller and Pete Holmes. I just like each's respective energy. They both have some great specials and actually seem like fun guys to be around. I think that makes for a good comedian. Shane Gillis has a lot of this as well.
I think Sebastian Monascalco is trash. His overtly "look at how jersey Italian I am!" bit got old after the first minute. Dude is ick.