Is there a yaoi where theres an older uke? When I say older, it's not young looking... he ...

http://www.mangago.zone/read-manga/fukigen_kareshi_no_nadamekata/ Its a series i think theres another book for them!

http://www.mangago.zone/read-manga/yume_no_you_na_hanashi/ i hope this is what you're looking for

Naono Bohra all of her works (well most of them at least) have middle aged ukes with younger semes