As a hetero sexual male, I feel I have little choice in the matter.
1. Shadowheart, cool her actress/model is beautiful, and as stated in other posts I like her.
2. LAE'ZEL, I do like her attitude. But no. She isn't even human/Dwarven How do we even know how her... you know... work.
3. Lastly KARLACH, yet again not even human/Dwarven. Not to mention she smells of brimstone.
So straight Human/dwarf.. goes with out love. lol
Generally speaking D&D doesn't specifically define genitalia but as with most mammals we can assume they work as similar approximation to human genitalia. And since the game lets you customize that component you can go in the character creator and try to create a Githyanki or a Tiefling and you know...have a look at what parts those species have in BG3.
Anyhow, ridiculous topic aside, you forgot to mention Minthara, who in my opinion is probably the most interesting romance option after Shadowheart.
