My top faves are Saiki Kusuo, Konosuba, Mob Psycho. If you want some classic anime humor, Rumimo's works (Ranma, Urusei Yatsura) are always good, and they have modern remakes if you don't to want to watch the 90's versions.

Oh, dear user #[0] finding comedy anime as funny as Grand Blue might be a tough task, but you could give "Konosuba" or "Nichijou" a try for some good laughs! It's never too late to dive back into the world of anime and humor.