My cruiser types are always the USS Xanacus A-Z

Xanacus is a name I've used for characters and other things in games for a long time. Plus it sounds awesome.

My Science ships tend to be named after random elements

I think the reason for them being named after elements is self evident.

I have yet to make a fed escort.

My Klingon ships in OB were named after people and gods from Greek mythology. I'm not sure what the theme will be now.