Huhn. Are you talking about comics Ra/BB? 'Cuz I get the impression the cartoon versions are a really popular ship - the comics version, not so much…I remember being more or less alone in squeeing when they hooked up in the comics. (Oddly, not quite so alone being annoyed they’d been broken up off-panel.)
And assuming the other is Tim/Steph…never got the impression it was unpopular (nor that their breakup was to be permanent - though with the relaunch, who knows how it’ll go). (Out of curiosity, how are you counting the Batgirls to get 4? Babs, Cass, and Steph, obviously, but is the fourth Betty, Helena, or Charlie?)
I may as well list some of my others, since I’ve only listed a few…unembarrassing ones, at that.
Another Ace Attorney one…Klavier Gavin/Ema Skye - I don’t generally dig hate ships - if they seem to hate each other, IMO, chances are they do…but Klavier doesn’t hate Ema, and Ema’s ‘insults’ generally tend to have a major element of talking about how good looking he is, so…they work for me.
As a Read or Dream/ROD the TV fan, Hisami/Anita is my OTP to end all OTPs…and, while never made explicit, it seems pretty clearly canon, albeit only to become an actual relationship (rather than a mutual crush) after the series ends.
Less canon from ROD the TV, Maggie/Nenene (Maggie/Faye in the manga, but since Faye doesn’t exist in the TV, and Maggie never meets Nenene in the manga, they don’t clash).
Unpopular, but I really like it… Pinkie Pie/Fluttershy from My Little Pony: Friendship is Magic… Nobody seems to like Pinkieshy - one or the other of them (especially Pinkie) always gets paired with Rainbow Dash. But, I just don’t see it… I mean…I don’t 'ship ponies! :eek:
ahem On a different note…in the webcomic Penny & Aggie, I 'shipped Aggie/Sara, until it became clear P&A were going to get together. (Ironically, Sara is, in universe, the world’s biggest P&A 'shipper. But I always read that a bit as 'shipping herself with Ags, by proxy, when she couldn’t bring herself to admit she liked girls. As it turns out, there may have been a bit of 'shipping herself with Penny by proxy…)