Stack Wallet is a new fully non-custodial multicoin wallet supporting Monero (and also its meme offspring Wownero) still in beta; website, subreddit. It's fully open-source (GitHub) which is still not the rule for multicoin wallets.

It's currently available for iOS and Android, with desktop versions for various operating systems seemingly on the way. Like Cake Wallet it works with "third-party exchange providers" for conversions between coins.

It's written in Dart, using Flutter. For its Monero supporting parts it seems to work with a fork of Cake Wallet, as per referenced GitHub repository.