No list I’m aware of. The + full dex medium armor can far outperform basic +2, of you’re just looking at AC values.
But I don’t think just looking at AC is wise. The whole point of other armor is the effects it provides; from lightning charges to permanent advantage on dex checks there are many effects which are just flat out better than high AC, on the right character. Monk and Barb may only even out their AC with mage gear, but then the monk gets like double the movement and jump values they otherwise would. And so forth - the benefit of “basic” +2 is specifically high AC, especially on the “best” armor of a given class. The way other armor will typically compete is in benefits you can’t get from AC alone, not in higher AC.
I’ll make a list later though, sounds fun.
