im not sure if this matches what you’re looking for, but here!
(I dont know if you actually want them to be true to the definition (scrawny) so I’ll just put reccs here)
Murderer Llewellyn's enchanting dinner invitation
Niidzuma-kun to Arao-kun Okawari
Satoshi and Kakeru
Harenai Sekai de Kimi Dake Mieru
Healing Paradox (not really a scrawny uke but you should read itt)
Mihanada Pectolite (Yaoi)
Hoshi to Harinezumi (Yaoi
Briefly Free (Yaoi)
A wolf and a Bear
(okay thats all im gonna list cause these reccs might not be what you’re looking for)
PERFECT THANK YOU I WILL READ ALL
scrawny dude (uke) x golden retriever guy (seme)