A couple of updates.
So, it seems that the link to results summary, which I can find in some options, is indeed the link to a permanently-updated results page that I hoped it was. I've updated the opening post with the link.
Also, I was just listening to a promotional
video (around 2:50) on D&D's YouTube channel, about characters, with the character artists team leader. It said that Half-Elves became very popular after Bards were introduced. Well, they certainly are, both of them.
At the time of writing, in the poll, Half-Elves make up about 20% of characters' Races (behind the Elves with 25%), and Bards make up about 25% of single-Class characters.
I think it's not quite surprising. I think that, with BG3 rewarding players for having good Charisma skills in the party (by letting them have more influence in how things play out), and with conversations being more rewarding if initiated by/led with your PC, Charisma classes are a naturally good choice for the PC.
I'll also note that Paladin stand at 14% and Sorcerers at 12%, with Warlocks at 9%. Leaving aside Warlocks, and if you ignore Minthara who won't be recruited much on first playthroughs, the Bards, Sorcerers and Paladins also have in common the property of not being represented by the Companions we can recruit. Which makes an additional incentive to go for them.
In fact, if we look at the classes not represented by Companions (namely, Monk, Sorcerer, Bard), we see that they are all in the top 6. The usually unpopular Monks are 6th with currently 7% use, in single-Class builds.
