Lil uzi vert, trippie redd, young lean, $uicideboy$, earl sweatshirt. You may also like juice wrld, recently found out about him so I still haven't gone through a lot of his songs but I can definitely see similarites to peeps music. You may also like lil xan, and lil happy lil sad. The ones I listed are the first ones that come to my mind when bringing up similar rappers to lil peep, you obviously don't have to like all of them but I'm sure you'll atleast enjoy some of their songs.