I like the list, really nice.
For DNS and domain registration, have you checked out DeSec 馃嚛馃嚜? I use them for quite a while and I am very happy.
Also, for Hardware security keys, ... I know Yubikeys are the most promoted ones. But check out Token2 馃嚚馃嚟. They support all the fido2 features with 300 passkeys, openpgp, totp, .... And the price is nearly half of a Yubikey.
* https://blog.tinned-software.net/framework-expansion-card-for-token2-t2f2-security-key/
* https://blog.tinned-software.net/fido2-security-key-login-for-id-austria/
@tinnedsoftware Thanks for the tips! The Yubikeys were a gift from Yubico for the #OpenSoiurce work we do.
deSec is a great suggestion. We know them well from the @dnsoarc community, as well as the IETF.
Will look into Token2! Nice.