Preliminary design of Sozai-chan compatible Monstergirl parts: scaly arms for lizardgirls, scalier lamia breeds (like the Echidna tribe from MonMusu), etc.
The two pics from hentai manga are what I was going for in terms of scute-patterns.
And the source of the two pics:
Colored pic:
https://e-hentai.org/g/642597/e66834fa24/BW pic:
https://e-hentai.org/g/1018981/5bf4cb5659/