Here are my rankings, with reasons:
1. Sasha Banks: The total package (if there can be any) in the divas division. Looks- check. Wrestling skills- check. Mic skills- check. Charisma- check. Crowd connection- check. Good entrance theme, finishing moves, nickname etc.- check.
2. Charlotte: Tall, strong, agile, looks the part, pulls her weight in every match and every segment, and will fit in both a face and a heel role easily. Oh, and woooooooooooo!!!
3. Nikki Bella: The best heel among the female wrestlers right now. Whether it's for her (a) connection with a very influential person, (b) her breasts and butt implants, (c) her mediocre wrestling skills, (d) her near-non-existent mic skills, (e) her Total Divas character, (f) her championship reign on its way to beating AJ's record, or for whatever other reason, we all love to hate her, and she knows it too and rubs it on our faces.
4. Summer Rae: She has been killing it with the role of Rusev's valet lately. Taking slaps, takedowns, hair-pulling, smacked with a fish- all kinds of assault from Lana, yet showing up gorgeous and in style on every show and playing her role very satisfactorily.
5. Becky Lynch: I have ranked her a bit low, because I haven't seen much of her yet. I sporadically tune in to an episode of NXT (since it airs on Sundays here and I have other work to do), but from what I've seen of her in the main roster, I'm impressed. With no strong weaknesses, she has a bright future ahead of her, that's for sure.
6. Lana: Arguably the biggest attraction from the divas division, her performance as Rusev's valet and mouthpiece was stellar. However, her character and style just don't click with the casually flamboyant Dolph Ziggler, in my opinion, despite the on-screen kisses and recent change of attire. Thus, she has fallen a few places in my rankings.
7. (Heel) Naomi: I liked her as a face... Her smile seemed natural, her theme song was fitting with her dancing/jumping gimmick, her Rear View finisher was unusual yet cool because she was the heroine and not the villain. In short, her flaws were covered because she was a likeable and genuine person, who made her way up the ladder despite that eye injury... At one point, I was rooting for her to become the Divas Champion. Now, ever since she has become this bitchy heel, all her flaws like poor promo skills, over-emphasis on the butt etc. jump right out at your face.
8. Alicia Fox: Has been around for a LONG time, but her most memorable moment is still that act of pouring a poor guy's beer on her chest. Never rose above the rest, one step ahead and then two steps back, sometimes a contender but mostly a filler- that's been the story of her career.
9. Paige: Vastly overrated, in my opinion. I just can't stand her for some reason. I find her character, British accent, Sheamus skin, constipated expressions, that scream- all very irritating. And her fans... ugh, her fans... they treat her like she has the wrestling skill of Kurt Angle, the look of John Cena, the mic skill of Paul Heyman and the charisma of The Rock... I'd probably rank her at #6, if it weren't for them.
10. Natalya: Has been irrelevant for a long time. Apparently, she can wrestle, but her only recognition in her career has been as a descendant of the Hart family.
DUD. Brie Bella: The worst diva of the last 15 years, second only to Kelly Kelly, because the latter almost single-handedly ruined the divas division. If she sticks around for a few more years, she will surpass Kelly Kelly too, because preventing the cure is worse than unknowingly causing the disease. If Daniel Bryan had a monkey as a pet, even the monkey would learn more things about wrestling than Brie Bella did.
DUD. Tamina: Has she done anything noteworthy in her career so far? When I think of her, the image that comes to mind is of her standing outside the ring in a black jacket, making a half-angry, half-smirking expression, and doing nothing else. She is only employed because of her relation with The Rock's family, and because she has to support 2 daughters on her own.
DUD. Eva Marie: Is she still around? I guess so, because she pops up in an interview every once in a while where she expresses her wonder at the fans not liking her. Except for the red hair, her relevance is on par with Aksana's.