For me I would say “The Expanse” is a huge one. If there was ever a self made family, the crew of the Rocinante is one of the best. The amount of time they spend together and how they congeal into life long partners and friends in the face of some truly awful events is really inspiring to me.
I think Odo’s complicated relationship with the Founders was an interesting take on it: he had to choose between his found family on DS9 and his kin whose values went against everything he believed.