For me the ranking would be
RE6 ( The game had insane production values in enemies attack animations and death animations , lots of enemy variety and there are attacks based on normal or critical state , Merc Covering most enemies in the game and 3 ( 4 if u count Carla ) female playable characters )
RE5 ( lower in Quantity than RE6 , but Urobous and Irvin were A+ material for me , Plus sheva is gorgeous and I love her )
RE4 ( Dont know If we should be grateful we got an Ada mini campaign , or hope that we got more of her , but there was some interesting Ryona for her and an exclusive boss with Nice Ryona )
Remake2 ( Said my detailed take on it before , but want to add that No merc/Raid type of mode is a big bummer for Ryona )
RE3 ( Please keep the Gamma hunters and Gravedigger worm for Remake3 )
Personally I dont like Gore and decapitations that much , I am more into the " Restrictive " type of Ryona , so Things like tentacles or bearhugs or vore or normal grabs appeals to me more