Male protagonist, male domination, harem, slave, smols, strategy, pregnancy (and birth) honestly I could go on but I think you get the point. Humiliation is a good one too.
No, that tag doesn't exist for me. First of all, I will read the announced content and/or the plot outline, then I will look at the discussion of the game, reviews (if there are any) and only on the basis of that I will decide whether to proceed with this game or not.
No, but I have ones that are absolute no, unless it's made clear it's optional. I mean, even if there was something I liked that much, if it was cartoony or ugly I wouldn't.
There really are none. There are some that increase my interest, but I have hard absolutely nots - like futa and monster girl. Teasing is a big probably not, as it usually means blue balling.