I'm talking legit no-manes with no mane gene, from SM to SM breedings, not srs or SMs with poor mane genes - with them the mane gene is still there, just poorly expressed.
I also think of it more as... a rex without the rex fur. A lop without the lopped ears. Colour is one thing, but if you remove the main defining feature of the breed?
I don't consider them lionheads.