I can't play for now as I have the game but NOT MY 3DS aAAAAAA- (sorry) But I'm sure I'll take Popplio. I didn't think about the name though.
I picked Popplio, I already picked Rowlet and I'm a bit burned out on fire type starters hehe. So Popplio and I named it Puppers XD
So I got Popplio, but did some soft resets because I wanted a female. All the scenes between the last moment you can save and when you get to see the Pokémon's gender is at least 2.15 minutes long, So I spend at least 23 minutes doing that x) The eleventh one was a female, so I went on Google translate and looked for good translations of "eleven" in some random languages. My final name for Popplio is Khumi ^^
Going with Rowlet, hoping for a female but won't soft reset if it's not what I get. Probably no nickname for now.. but hnng, still waiting for my game to arrive. Should be any minute now. *^*
I went with Rowlet again, although that was mostly because I want to get a Charmander for my fire-type through Island Scan - or trading from Moon, if the game doesn't co-operate with me - and I think Popplio is my most reviled starter ever, haha.
I picked a Litten this time around. Mostly because I don't want to let my 'meh' opinion of Incinceroar tarnish my opinion of the first two forms. And also because I'm a cat person. Definitely because I'm a cat person.
I chose Litten this time since with Moon I chose Popplio and Alola has a great variety of grass types so I didn't think Rowlet would fit well for my team. Interestingly enough, my starter is female (11.9% chance) so I thought that was neat. I ended up naming her Felly and she has been a solid mon! Litten gets access to double kick pretty early in USUM and that has made a big difference since there are a lot of normal types in the early stages of the game.
Litten, but I traded it to get Totodile since I had a premade team on hand for my first playthrough. In Ultra Sun I'll probably pick Popplio since I really wanna try out Primarina.
I chose rowlett since me and my brother chose popplio and litten in our sun and moon playthroughs. It ended up being nicknamed Borb thanks to the great Oneshot discord server's suggestions.
Poplio, I tried to soft reset for a shiny , than I tried for a female but no luck, so I decided to go for good stats and they weren bad, so I jusy started XD
Rowlet every play through! I love the little guy, especially since owls are my favorite animal, and making it a starter made it a must have.