you probably know these but Imaishi is infamous for taking the audience on a ride that goes crazier on every new episode -pic related meme from kill la kill although is not for everyone
also from Imaishi there's Dead Leaves, FLCL, Gurren Lagann and Panty & Stocking with Garterbelt.
Devilman - Crybaby
Afro Samurai TV + Movie
since old/gore stuff seem to be what you're looking for maybe try
MD Gest, Hokuto no Ken, Ninja Scroll, Battle Royal HS, Violence Jack, Cybernetics Guardian, Genocyber, Wicked City,