WandaVision was a bit odd at first but really picked up and turned into a fantastic show, even if it spun into the standard Marvel movie battle at the end. Really great character spotlight for each of the named characters.

Sam & Bucky is OK so far. It reminds me of Agents of SHIELD except with a bigger budget and less interesting cast. I do like that they have a pretty sympathetic villain but otherwise the show is fairly formulaic and predictable. I still enjoy watching it (since I loved SHIELD, after all).

I agree the Loki show looks pretty interesting. It also helps that of all the three shows, that one stars the best character.