nostr:npub1k24sy39zjs7pccfcafcfghn0tcl96wht85tf7ygv3tv2cqa7kezqum26zw nostr:npub1d62z0nl8twfw37nrdr3cfrr66pq8a3nclmmkqp6prrtqgjjen85spvtshf 
I haven't read anything recently which featured an ungendered character. But if I remember correctly, Bone Dance by Emma Bull had a non-gendered MC. It's been a while since that book was published, before the commonality of NB pronouns, and it was written in first person. I remember it did sometimes get verbally awkward as the author skirted around the lack of apparent gender (which I think was a plot point, it's been a few years) but it might be a useful comp for you.