Well ... you asked, so please dont be insulted. Some races downright insult my common sense and I dont look kindly upon that.
1. Halfling
2. Gnome
3. Drow
4. Elf
6. Half-Orc
5. Human
7. Half-Elf
8. Dwarf
9. Tiefling
10. Githyanki
11. Dragonborn
Halfling - OP. Just OP. In a very skill focused game they reroll a critical failure. And then Lightfoots get Advantage for Stealth. So everyone else gets a 1:20 chance to have a critical failure on a Hide check, a Stout Halfling (that I dont play) has a 1:400 chance, and a Lightfood Halfling has a 1:160,000 chance. Not to mention they will roll higher on average anyway due to the Advantage. Why would you ever use anybody else for Stealth but a Halfling Rogue ? And it works in all kinds of other places including combat, too. You also reroll critical failures on attack rolls. As long as you can hit the opponent on a roll of 2, you have only a very minor chance to miss.
Gnome - Well on the plus side they get a kickass advantage. Much less universal though than Halfling, since it is only relevant in battle. On the negative side male Gnomes look just abhorrent in BG3.
Drow - They look cool, and they get Rapier as racial weapon, so even a Wizard or Sorcerer can melee just fine (Longsword, which is what regular Elves get, would need Strength instead). Not anywhere near as powerful in the past, but still great looking, and their racials arent bad.
Elf - They look good and their specials aint bad. My Paladin for example is a female High Elf. Just the purest race I can get. I wished I also could get an Unicorn mount to ride.
Half-Orc - Cool special ability, if you want to play tank. Very tempted to use them for a Fighter/Champion for maximum effect. In BG3 they look less ugly that in other games, too. I mean they look ugly, but in a heroic/manly way, as they are supposed to. But many games get that part wrong and make them just look ugly, with no chin etc.
Human - The carry capacity part is cool. Fancy them for a Wildheart Bear Barbarian for maximized carry capacity.
Half-Elf - I liked them in the past but in BG3 they just never come up as my race pick when I design a new character. The whole can use polearms part offers little additional functionality beyond that Shadowheart can use her goddesses weapon of choice.
Dwarf. Well, they always look so ugly. And in BG3 they are big time underpowered. Unless you want to be a mage in medium armor, I guess. Which is all I see people playing them as.
Tiefling horns are literally attached to the most fragile part of the skull. So the functions their horns serve ... is to make the skull, the most important part of the body, more fragile. Real horns would attach near the base and would increase, not decrease, protection of the skull. So yeah I dislike Tieflings with a vengeance for being a stupid concept.
Githyanki literally look like insects. Their nose is simply too small to function properly. Basically the moment they can no longer breathe through the mouth for some reason they would suffer from Asthma. Their racials are very powerful and I hear that the itemization for Gith Fighters is OP.
Dragonborn. So they're a sentient race ... but they cant smile or do anything else with their face. Begone.
As a biologist, I had a very good laugh. Thank you.
