While 2020 kept so many families painfully apart, three acclaimed indies from last year made the opposite case: “Why do I see these people again?” Playing a little 2021 catch-up, Chance and Noah drop by to visit “Spencer,” “Shiva Baby,” and “The Humans” to explore how families—be they English royalty or middle-class Americans—banter, bristle, covet nostalgia, push buttons, and flirt with genuine horror.

But hey, just look at that spread.