I love my Ayn Odin. There are great emulators on Android but also a ton of native games with controller support. With a Play Pass subscription ($30/year) and Netflix Games (which I’m paying for anyway), I have everything I need and the battery last 6h+.
The Ayn Odin has a Snapdragon 845, which is quite powerful but just borderline for PS2 and after. I was sad to see that the new Odin devices are windows/x86, which are more powerful but have shitty battery and shaky sleep features.
Other than the Razer, is there any company working on bringing newer Snapdragon chips to compact handheld android devices?
There is always the phone + controller grip option. I do that whenever I want to play something later than ps1