Sidekick (Monerujo wallet) and Nero (Anonero wallet) are a couple others. Both work similarly to Cupcake.
There is also a Seedsigner fork called XMRSigner then forked again to MoneroSigner, but progress on that seems stalled. Not sure if it's abandoned or they're waiting until after FCMP upgrade to continue.
https://sidekick.monerujo.app/
http://anonero5wmhraxqsvzq2ncgptq6gq45qoto6fnkfwughfl4gbt44swad.onion/
