The Kaweco Sport line of pens is a recent favorite less expensive brand for me. But I can never remember their naming scheme.
You have the regular plastic ones named “Classic Sport”, then you have a bunch of others all named like “X Sport” like Al Sport, Brass Sport etc.
But I never use this scheme in my pen note/spreadsheet because I prefer to not to multi column sorting and have names like “Kaweco Sport Al Purple”. Plus that it removes the entire complexity of how many columns to use for the naming.
Not that Kaweco is the worst at having weird names. I just use them as an example because they are the ones I never get right.
TWSBI is particularly annoying to me. Because you have “TWSBI Eco Color” “TWSBI Diamond 580 Color”. Some have the Diamond prefix others not. At first glance it seems like all the fancier clear body ones have it, except the Vac series? And then they have all kinds of “sub” brands like the “580AL”, “580ALR”, “Vac700R” and suddenly the “ECO-T”. But it gets worse with the Mini’s because they are just “Vac Mini”, “Diamond Mini” “Diamond Mini AL” without the numbers even though it’s just a smaller 580.
For sanity reasons I roll my own naming scheme, and try to find the actual name before writing about it.