My fav one right now is Stewart Lee. He is often called the "comedian's comedian" and I think people here appreciate smart content so you might enjoy him. ("Content Provider" is his latest show https://www.youtube.com/watch?v=X1UCt5iItcw Stewart Lee is incredibly smart without being overly offensive - something that gets old after some time (e.g. Jimmy Carr or Franky Boyle I both like but it's a bit shallow imo and lacks an overreaching arc in their story).
Lee is more demanding than shows that are made for mass-audiences (Michael Macintyre, etc) and will probably always remain on the fringe. He also has some great tips about writing vs not writing. https://www.youtube.com/watch?v=IrXVaytvJtQ incredibly intelligent guy which seems to defy all the traditional rules of the trade. He also helped Noel Fielding and Julian Barrett become popular with "The Mighty Boosh" material at the Edinburgh fringe. (TMB is incredibly obscure but once hooked people usually either love it or hate it (it's hard to feel just partial about it).