Can a apps be indetified

I have had the following apps installed using flatpak
Intel …desktop.Platform.VAAPI.Intel20.08 system

Intel …desktop.Platform.VAAPI.Intel21.08 system

How do I identify what they represent or what they are associated with?

These are not apps, these are runtime extension. If they are not removed by the command I posted in the other thread of yours it’s because you still have a runtime that uses it, because of an app that uses it.