If you can post some pictures, we can probably take a good guess. They're pretty "typey" little birds, so it's often easy to tell most crosses. Regardless, please keep in touch. We can all compare notes!I would love to get some more nankins but I just bought 13 chicks and now I have no room left in my coop. I am considering breeding the Nankins I have in a few years but I'm not sure if they are all pure Nankin or if some of them are mixes.
There is a Nankin thread here on BYC, too. It's not terribly active, but there is a dedicated handful of Nankin people who stay in touch pretty regularly. That's a good place to check in ... and out!
https://www.backyardchickens.com/threads/nankin-bantams.1216042/