Email magic links are cool (personally hate when a website only allows this login because I don’t have my email available on every site, but that is unrelated sorta).

I probably wouldn’t go with a relatively new project that isn’t guaranteed to stick around long-term (big hassle to swap provider).

authelia and authentik both have a lot of eyes looking over the code so I’d also feel more confident going with them, even if I can’t get passwordless email login (don’t think they support it but not certain).