1. Can't answer this, sorry!
2. Can't answer this, sorry!
3. Probably!
4. Killigan'sfavorite meal is probably something close to a roasted veggie casserole, with plenty of greens but also proteins. There's not a list of everyone else's favorite meals, but you're welcome to try and theorize what they might be!
A lot of your questions are ones I can't really give definite answers to, because they'd spoil parts of the game that haven't happened yet. It may be worth theorizing with other players as to what things might mean or imply, when there's no clear answer that can be given yet!