Is it possible to get more supported devices in AR?

Dear Everyone,

For an exhibition I have some paintings and when you are looking at it, there is some AR Content.
My problem now is the usability for the Audience, because I wanted to make it as easy as possible for the
people. That’s why I need a broad range of supported mobile devices for AR.

Is it possible to get more supported devices in UE4 for AR then what ARKIT and ARCORE offers?
I mean especially is there a downgrade for Android devices?
I know, that for example Unity + Vuforia have many, many more devices then ARCORE.
Of course I also know ARCORE is still in development and also one step ahead.

Is there a way around or some plugin?

Do you have any expierence with that?

Thank you very much for the inconvenience.

Best wishes