Back in the day on Live, my first thoughts would have been:
Enchanter: HIE
Magician: DEF... just because I played one on SZ
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Necromancer: ERU or DEF
Wizard: I don't have a strong association here, DEF, ERU or GNM
Cleric: Again no stand out from classic, DWF or HIE probably
Druid: ELF for sure, HFL very secondary
Shaman: BAR by a long shot... most players felt that "evil" was a serious disadvantage
Bard: HUM
Monk: HUM... nobody had any idea we'd be playing Iksars or that they'd be vastly superior monks, and almost no players were min/maxing then anyways.
Ranger: ELF by a lot, probably HUM second and HEF last
Rogue: BAR and HFL; BAR for the STR and HFL cus Bilbo.
Paladin: DWF, with HUM and HIE not too far off
Shadow Knight: DEF was the classic choice, though people that understood stats and slam would pick TRL/OGR
Warrior: BAR or maybe DWF... people didn't want to be "evil" if they had a choice.
Iksars are eliminated from the list, as nobody knew about them (and what little we knew didn't indicate how OP they were...) and also cus the vast majority of players were very sub-50 when Kunark came out.
Evil toons were extremely undesirable because they were logistically tough. Where will you bank? What vendors will you use? Where will you bind!? I played a lot of classic on Sullon Zek so I probably picture a very above-average number of dark elves, since I was on the evil team.
Virtually nobody min/maxed. Throughout the entire original extent of the p99 eras there was serious debate about what different stats even
did for you. Rangers maxing AGI to be better "tanks", INT classes stacking STA for more hp, you name it. The misunderstandings faded over time, but in Kunark era there were still plenty of players that had no idea. I remember giving explanations of what each stat did to sell the jewlery, and having people argue with me, like the guy that wouldn't buy my +INT and +WIS jewelry (and loudly told everyone I was a fraud) because "only base stats from character creation determine mana".