I love Anakin, Obi-Wan and Padmé but Leia/Han/Luke is the OG trio, plus the prequel group didn't spend as much time together. Anakin/Obi-Wan/Ahsoka is more similar to the OT trio imo.

Edit: Plus Han Leia and Luke have some great moments in Legends novels, I'm reading them rn.

I have to go with Luke, Han and Leia which is my personal favorite