however, their scales are not the same, a dragon scale is totally different from a lizards scale.
Its like comparing snakeskin to the hide of a buffalo, completely different

As for whether or not a lizardman should use humanoid type rune, of course it should, a lizardman is totally a humanoid, the only difference of note, is a different head, and a tail
They walk erect like a humanoid, its not like they walk around on all fours, or fly around like dragons (no wings) they are as close to a human as it comes
