Powder numbers...
Orpington--Powder numbers have the same degree of sensibility and consistency as do the names of car models, or S&W pistol models. Likewise predictability. As noted above, some are numbered for a reason, like 2400, however...
ETA--Also, some powders have names, not numbers. Marketing dept. hoo-hah. "Retumbo," "Green Dot," and "Trail Boss" come to mind. (Trail Boss could be named, "Fluffy" instead, but it doesn't have the same ring to it...)
Powder numbers serve to identify a particular powder. You need to know the manufacturer, too, as AA-4350, H-4350, and IMR-4350 (for example) are similar but the loading data are not, repeat, NOT interchangeable.
But that's all you need for reloading purposes. Sure, there are cute stories about some powders. Big fat WHO CARES!
As a reloader, you need a recipe from a reliable source, and clearly identified components as per that recipe. Having secured these, get your loading equipment lined up and start cranking out ammo.
If you want to have fun with names, you could name your ammo, e. g. "Orpington's Death to Hogs Rounds."