Some of the girls Joe's had flings with that we know of seem to have closed their Instagram, apart from this two Beth with the blond hair and Ruby with the dark hair:
https://www.instagram.com/beth_pickard/ He's defiantly had a few flings with Beth.
But Ruby was only rumours and assumptions due to how they were acting on a night out on someones insta stories, so don't know if anything ever happened as she had supposedly only just turn 18 at the time:
https://www.instagram.com/rubysophiablake/
Also, he seems to have unfriend them all on Instagram apart from this one:
https://instagram.com/elenielis and until he started strictly he was still liking photo of her and even photos of her and her Boyfriend which I thought was a bit strange.
It seems up until Joe meet Dianne he only went for Instagram model types as he knew in another world they wouldn't take a second look at him. But from watching his videos over the years when he's been describing his future serious girlfriend, I don't think he's particularly had a type, but he has indicated he's more in to the natural type girls.