User blog comment:MasterBroccoli/Manual of Style/@comment-5157002-20170917180104/@comment-27274076-20170918180035

I personally prefer no capital letters there. I try to avoid capital letters where I can, but there is a reason I consider quite valid here. First of all, although in-game concepts, things like major or minor gods and god powers do exist in 'real mythology' (weird thing to say..) as well, so they can very well be considered 'generic'. Also, if we start capitalizing things like that, we'd theoretically have to capitalize all terms like this (civilization, building, technology), because here (in the wiki), they point at in-game concepts of these real existing things, just like gods and god powers do. Furthermore, I think it is confusing to write e.g. 'Myth Unit' like that, and then 'cavalry unit' like this. I'd certainly look odd if these two were to appear in the same sentence, and one branch is capitalized while the other one is not.

I think it is easiest and clearest to write all summarizing terms in lowercase.