I also use mythological names. Specially god names and mainly egyptian gods:

Anubis is my main one, 24/7 server. Ra is the one i use to experiment with and Zeus is my vps with vpn

For some very specialized cases that i used in the past for my Raspberry pi 4, i used Odin (i installed Huggin there), Tenjin (no reason at all, i just like it) and Khonshu