Not the nominator, but I can at least partially answer about the Star Wars ships:

Obi-Wan Kenobi/Siri Tachi is from Star Wars Legends. I don't know how specific you or the nominator would want to get, but the specific series canonical on Ao3 for it is probably either "Star Wars Legends: Jedi Apprentice Series - Jude Watson & Dave Wolverton" or "Star Wars Legends: Jedi Quest Series - Jude Watson".

I have no idea which version of Obi-Wan/Qui-Gon the nominator would want, but it's probably either Prequels or either New/Legends EU.