Perhaps. I haven’t used the ROG Ally or any of the Windows-based PC handhelds, so I can only speak for how much I enjoy my Steam Deck.
That said, the “Apple experience” would be a Switch. It just works, looks sleek, and it costs way more than it should given the hardware specs. Yeah, it’s not a PC handheld, but that’s where I’d expect most Apple users to go for games.