While not advertised on Apple's website, it has been discovered that iOS 16 adds support for the Nintendo Switch's Joy-Cons and Pro
iOS 16 will let you use Nintendo Switch controllers with your iPhone games
Upcoming iOS 16 supports Nintendo Switch controller and Joy-Cons
News - iOS 16 Adds Support for Nintendo Switch's Joy-Cons and Pro Controller
Apple's iOS devices will soon support Nintendo Switch Joy-Con and Pro Controllers - Vooks
The Wonderful World of Switch Joy Con Mods, Page 4
The Wonderful World of Switch Joy Con Mods, Page 6
iOS 16 supports Nintendo's Switch Pro and Joy-Con controllers : r/ NintendoSwitch
iOS 16 expands support for Nintendo and other game controllers - 9to5Mac
Steam Adds Native Support For Nintendo Switch Pro Controller - No Need For 3rd Party Software Anymore –
iOS 16 supports Nintendo's Switch Pro and Joy-Con controllers : r/NintendoSwitch
The Wonderful World of Switch Joy Con Mods, Page 5
Steam Client Beta August 4, 2022: Update adds support for Nintendo Switch Joycons
Nintendo's Switch Joy-Cons are compatible with iOS 16
News - iOS 16 Adds Support for Nintendo Switch's Joy-Cons and Pro Controller
The Wonderful World of Switch Joy Con Mods, Page 4