@dave2008
I appreciate the posting of the relevant description of Divine Rank.
Heh, I hate when 5e bakes the polytheistic setting flavor into the core rules. I wish the designers would organize this stuff as an opt-in setting option. No doubt, the descriptions of types and tags would be clearer if they did organize it as a separate system.
In any case, the ‘titan’ tag clearly refers to Divine Rank.
It still remains unclear to me whether a ‘greater deity’ can be considered a ‘race’, thus other ranks of divinities be defacto functioning as different ‘races’.
Assuming the designers are applying these rules attentively and consistently, the stat block for Lolth seems instructive. She is listed as a ‘fiend (demon lord)’.
Pertinently, she lost her ‘celestial’ type by becoming evil, and gaining the ‘fiend’ type instead.
Moreover, she lost her ‘elf’ race (if she ever had it) and perhaps became the ‘demon’ race instead.
She has zero connection to the Fey type.
Presumably, her status as a ‘lord’ is equivalent to a ‘lesser deity’, but nothing in the stat block actually says this. It is only because she grants spells to her Clerics, that she must be at least a lesser deity according to the description in Divine Rank.
It could be that deities have their own special kinds of rules of existence, and count as a separate race (being something like a special kind of shapeshifter). Or perhaps more accurately, the Divine status transcends the possibility of being any race.
It could be that a ‘demon lord’ as a specific kind of ‘lesser deity’ is no longer is part of the ‘demon’ race.