Jack/Katherine for the ship thing? and/or javid if you want :)
Jack. He’s not too messy, but there are a few things (like rinsing a dish right after you use it or cleaning the bathroom regularly or making the bed) that he finds completely pointless. Katherine tolerates it all because she forgets that cleaning is a regular thing they need to do. Jack does keep the place tidy, though.
Who feels the most uncomfortable about PDA:
Katherine. She was raised as a lady and even though she actively ignores that part of her life, she still feels odd about Jack kissing her in front of a group of people.
Who’s the funniest drunk:
Katherine. She's that peppy, happy giggly drunk, but about three or four drinks in she starts going up to everyone and telling them how much she loves them and it's a great amusement for the boys.
Jack. He likes to send random texts throughout the day, stories from work or from day to day, things that remind him of Katherine, etc.
Who has the most embarrassing taste in music:
Jack likes anything and his large group of friends. His iPod has musical theatre, top 40 songs, punk rock, country music, techno...basically everything. And he's not the embarrassed one, everyone else is.
Katherine. Jack knows how to read, but not well, and he'll only do it if he has to. But Katherine likes to take a break from her articles sometimes and read novels and plays.
Jack. Years of being a Newsie with much younger boys around has helped him learn how to deal with kids.
Who’s the one that fixes things around the house:
Neither. They'll both try and end up asking someone else to help.
Who’s got the weirdest hobby:
They both have pretty normal habits? I can see Kat as a nail biter when she gets really nervous, and she also is someone who complains very vocally if she's not happy (Jack gets her to ease up on that though if he can see it's not the employee's fault). Jack, on the other hand, runs his hand through his hair a lot and splatters paint everywhere if he's painting while angry.
Who cooks and who cleans up:
Katherine cooks, because Jack's attempts are 8/10 disasters, and he makes up for not cooking by doing all the dishes.
Again, Jack isn't exactly messy but there are things he just won't do and Davey lets a couple things slide but he is insistent about Jack at least rinsing the dishes and then putting them in the dishwasher (there has been a fight about that and Jack started actually doing that every so often)
Who feels the most uncomfortable about PDA
Jack, because he's afraid of someone hurting Davey. He knows how a lot of people feel about same-sex relationships (esp in the canon era) and he doesn't want those kind of people getting at Davey because Davey is so special and important to Jack and he won't let anything bad happen to him.
Who’s the funniest drunk:
DAVEY oh goodness. He stumbles around and tells everyone everything and is literally all over Jack and he loves it.
Jack, again. Just little reminders to make sure Davey knows he's thinking about him.
Who has the most embarrassing taste in music:
Davey is embarrassed about Jack's at first, but he gets over it soon enough
Davey devours books. Anything and everything and he'll read to Jack if Jack asks. And he'll rant about book to movie adaptations :)
Jack, again. But Davey is pretty good with them too, because he has Les.
Who’s the one that fixes things around the house:
Neither because they realized neither of them are good with tools, so they'll call a friend or the landlord for help.
Who’s got the weirdest hobby:
Jack's got his little quirks like I said earlier, and Davey paces when annoyed, and he'll clean up the apartment almost obsessively and he tips way too much if he has the spare money.
Who cooks and who cleans up:
Davey cooks pretty well, but he doesn't have the heart to tell Jack that he can't cook so Jack cooks every once in a while and Dave will just eat it no matter what. They both clean up afterwards, though, singing and dancing and being adorable dorks.