Reverse bearhug is definitely the most arousing for me however I've never received one, so I can only wet myself watching this fashion of l&c on the internet (btw. this is very rare one, among other types unfortunately).
I found and downloaded just a few decent vidoes of that since started to do online research in 2008 which is a shame. Also I like back-on-back lifting with arms joined together by elbows. I got a few of lifts like that in 2006 and then 2009 from my 4 years younger than me female cousin which was an amazing experience! Firstly I lifted her that way "just for fun" to make a good pretext for asking her later to do the same to me. That was my strategy!