I didn't realize you could custom-make a background. A picked a pre-made save because I had messed up the hollowborn choice and also couldn't remember all my choices in POE 1 to feel comfortable going with the imported save.
The pre-made definition gives you some idea of what they are, but I don't know if there's a checklist you can see. In my game, though, I picked benevolent pre-made (because that mostly matches my original character) and:
-Eder was skeptic
-Aloth was anti-leaden key
-Pallegina had taken the loyalist route in the trade deal, which is good for her but bad for some people in Dyrwood
-I pledged to do what Hylea wanted with the hollowborn (return the souls to their original bodies) and got rewarded
-I got Vela
-I killed Concelhaut
-I helped that one poor lady that was messed up by Skaen to kill everyone, forget her horrible memories/not kill everyone
-I hid something that Wael asked me to hide? I can't remember what the details of this was, even though they were familiar
-I made Thaos forget his past life memories so he could live without them
I can't remember anything else off the bat.