A small nit about Curve25519 vs X25519. The name of the curve is Curve25519, while the name of Diffie Hellman function utilizing the curve is X25519. Same with Curve448 and X448.

That's why the line `TLS curves: X25519, prime256v1, secp384r1` should be `TLS curves: Curve25519, [...] `

I'd impose my pedantry on the Mozilla wiki but it's not accepting account registrations, I guess understandably.