Poll: The most common way I've seen for SSH access to #Linux or #Unix servers (please boost for reach. TIA):
Username and password
29.6%
SSH authorized_keys (pub key)
65.4%
SSH Certificates
4%
Other (I will reply below)
1%
Poll ended at .

@nixCraft public keys managed with an initialization Ansible role.

I've tried ssh certs, but it's more annoying to manage for my setup so far