Alby is the easiest has next but it's similar to WOScin that it can be brought down

Phoenix is simple and self cuatody but can be expensive to set up the first channels, also no NOSTR integration 

Mutiny is pretty simple and has NOSTR integration but you have to open the app to send zaps 

 Using Pixel 7, Amethyst and connected Mutiny. No issues Zapping notes... 

 Maybe these ln custodial wallets in USA needs to implement something like https://www.uma.me protocol?