I think her and Ridley would get on smashingly, def fembros yes.
I agree. I think Syd and her would get along fine, I feel like Izzy doesn't wholly get psychics, like, are they supers are they just weird people. Their family pretty much ignored what I'll sum up as the 'nonviolent sorts', so she was never really 'educated' on them like she was the others.
Izzy got over her skepticism that the 'violent sort' could behave after a year or two at the division. She's really intrigued by the ones that do really well blending in with society and what not. So as long as he's not off killing people in his spare time secretly she'd be cool with him. (Her brother was killed, uh, rather violently by a demon so there's also no hidden hidey stuff going on there.)