Backbone Phone Controller - Cloud Gaming & Remote Play Compatible

Backbone is a mobile gaming controller with intuitive controls, clickable thumbsticks & zero latency that works with cloud and remote gaming.
Backbone makes your iPhone into a serious gaming device. Play any game or service that supports game controllers. The Backbone One controller works with services like PS Remote Play, Xbox Game Pass Ultimate (xCloud), Apple Arcade, Xbox Remote Play, Steam Link, Nvidia GeForce Now, and Luna. It also works with games like Call of Duty: Mobile, Minecraft and Genshin Impact. Press the Backbone Button to bring up the app and launch into your favorite games that support controllers from one place. Backbone One has a built-in Capture button that allows you to easily screen record or screenshot gameplay and share directly to social platforms like Instagram Stories and iMessage, all directly from your mobile device. Never miss a moment. Hold the Capture Button to bookmark a moment when recording. Forgot to bookmark? Once a video is captured, Backbone's app helps you identify your most action-packed moments automatically, allowing you to show off your best moments and highlights with ease. With Backbone's Rich Presence feature, you can get push notifications when your friends start playing games on Backbone, making it easy to join the action in real-time. Once you see a friend online, you can link up for voice chat inside the app and move from game to game, seamlessly.

BACKBONE One Mobile Gaming Controller for iPhone (Lightning) - PlayStation Edition - Turn Your iPhone into a Gaming Console - Play Xbox, PlayStation, Call of Duty, Roblox, Genshin Impact & More

Backbone One Gaming Controller for iPhone Lightning w/ $25 Playstation Gift Card

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Backbone One Review

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Original Backbone One for iPhone PlayStation® Edition Compatible with Xbox, PlayStation®, and Steam

I think at this pointed I tested most of possible options for mobile gaming + controllers… : r/Backbone