Glasses, braided hair, seems petanko - The otaku friend from one of previous chapters is best girl, but she is probably a proper childhood friend and thus will lose for sure?
Thick thighs hidden otaku gal girl also seems closer to petanko than to cow-tits - so she is the second best girl.
Cow-tits is 3rd, but there is huge distance between 2nd and 3rd positions, like few station lengths. She is 3rd purely cause of the tits size and nothing about her interest me in all honesty - just some cutesy bimbo or something thus far.
Stalker-san is like disqualified, she is 4th but she is so slow on the race, she started after the other girls made few circles around the track already, and then she run the wrong way too. Liking cats is the only thing she has going for her, but the stalker and manipulative stuff just pushes her into negative levels of "being interesting". I hope her plans fail in a spectacular fashion of pushing MC into love with a different girl - even if it was the cow-tits.
Anyway its a harem, so either no ending, all girls will win, or the worst girl will somehow win - at least thats how all other harems I know ended. Amagami/Photocano style being the only exceptions IIRC but then those were animes and I wouldn't really call them harems, cause each girl in those had their own "parallel universe" style story.