I've been seeing cass support, annie support and ahri support..i'm not too thrilled about them lol.
But I think varus/morg is pretty common. I would run lux support and ashe or graves as adc maybe.
Nid/Cho seems like it's just going to throw off the mind to lane against, but if you dodge nids spears you should be fine. I would run sona/cait against it and just ward so you know where cho is so you dont get caught in a silence or knockup.
MF/Noc I wouldn't be worried about at all. Noc isn't that scary until lvl 6, but his ult in lane isn't bad since you see him on screen when he activates it. Just play like nami or sona with any adc that runs good against MF.
As for Kayle/Xin, I have no idea. I've seen it before, and I've seen kayle adc, kayle support, and xin support and xin adc. It really just throws me off, which makes me lose the early lane phase but as long as you stay a distance from kayle you should be alright. I would probably just run Cait if she is open with any support that has sustainability.
That's just my thoughts though.