I know there's someone on ebay who sells frizzled Ayam Cemani. Not sure if they're pure or have been outcrossed to get the gene into their Cemanis, but they claim that they're Cemanis anyway. I see their listings every now and then when I'm daydreaming at hatching egg listings.
The frizzled Polish I've seen have generally been large fowl. I've also heard of frizzled Plymouth Rocks.
Oh, and I saw frizzled Salmon Faverolles in show at some point in the past few years, too! The frizzling on their beards was spectacular!
View attachment 3184985View attachment 3184986
Also, I believe it's
@Ribh who I just saw post like yesterday about their frizzled Wyandottes. (Apologies in advance if I'm misremembering! I've blinked since then, so memory reset.

)