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
Joyconverters Mount Joycons to iPad and Surface Pro Tablets for Portable Gaming Geforce Now Xbox Cloud
iOS 16 Adds Support for Nintendo Switch's Joy-Cons and Pro Controller, Page 3
iOS 16 allows access to gaming with Joycons and Switch Pro Controller!! : r/iosgaming
Connect Nintendo Switch Controllers to your Apple TV
Apple's iOS 16 adds support for Joy-Cons and the Nintendo Switch Pro Controller - My Nintendo News
iOS 16 lets you use Nintendo Switch controllers on your iPhone
The Wonderful World of Switch Joy Con Mods, Page 6
Switch Controller Charger for Nintendo Switch & OLED Joycon Charging Dock, Switch Organizer Station with RGB Lights for TV Dock, Pro Controller, 4 Joy-Cons, 2 Extended USB-C, 8 Game Slots
The best Nintendo Switch controllers - The Verge