You’re right about lyrics: the lyrical content is generally limited and if you were to summarize a lot of music you could put them under “forms of crystalized jazz” I suppose.
But there is something that attracts a person to a “style” of music. it’s not the lyrics but the rhythm and “spirit” or “flow” of it. I don’t know what that is — and I have trouble identifying what “mine” are – but I find it fascinating just the same.