To avoid sounding racist , or especially sexist (which I guess is impossible, as I name my guitars after women.... Blame BB King & Lucille)
By country of origin . American guitars are named after American Wemin who have impressed me favorably
Luckly, I have been acquainted with a coupla of Asian wemin, Chinese, Korean and Indonesian ) so I have that covered too . Mexican ...
Build of the guitar . 25.5" scale length ... Tall wemin 24" scale , short wemin (Jaguars, short & hippy !) :
I need to meet more Indonesian wemin, as I am acquiring Indonesian made guitars at a growing clip
I even have Vietnam covered, but I'm yet to buy a Harley Benton ... (but their Fusion line looks promising)
All these are named after women I have had "aspirational relationships" with . Positive, friendly not intimate
If I named guitars after actual past girlfriends, I'd have to go "Hendrix at Monterey" on them !
I guess if you are married ... all that goes dark. Or they are all named after her (or become her communal property ) !