> I'm using Apache at the moment and it's working great.
You know, Apache is pretty decent.
I'm actually surprised that they added ACME functionality with mod_md before Nginx, so now you can get Let's Encrypt certs without the need for certbot: https://httpd.apache.org/docs/2.4/mod/mod_md.html
If you turn off .htaccess the performance is okay as well (closer to how Nginx has nginx.conf), their mod_security performs pretty well and I'm not sure of that many alternatives to mod_auth_openidc elsewhere.
Of course, Nginx, Caddy and other web servers are really nice too!