Yeah, sorry.

Medals are probably the best metric. Besides red for broken, they go

• bronze for barely playable with lots of tinkering
• silver for playable with tinkering
• gold for working great with some tinkering
• platinum for works out of the box with no tinkering

And above that “native”, which I think is not included in the charts. Even native games you can still opt to play through proton though. I had better performance playing Slay the Spire and Project Zomboid on older gfx with Proton than native for example.