SteamOS, once the purview of the Steam Deck alone, eventually opened itself to other handhelds. Officially that extends only to the the Legion Go S, but beta versions of the operating system have since supported the Asus ROG Xbox Ally and "Other AMD powered handhelds."
The key term there being 'AMD', because until very recently, SteamOS had only supported handhelds running an AMD processor. Now, though, a new SteamOS beta seems to have added support for Intel and one YouTuber has got it up and running on an MSI Claw (via VideoCardz).
