Joe: Yes, I know; but···

J U W are all forms of Latin letters ~~ respectively an extended i, a misshapen V, & 2xV [hence its anomalous name ~ what do you call W, now?]

"Yog" & 'thorn", otoh, are Scandinavian/Norse, rather than Latin (yes, I know about what typographers say, just extending the discourse in interests of logic & accuracy): hence not part of the "ABC alphabet", as you call it(ever hear anyone say "Ay,Bee,Cee...esS,Tee,thorn,yU..."? thought not!), any more than any Greek, Russian, &c, letter. My post was, in a way ∴ a sort of protest against a standard misuse by typographers.

~M~