I had a Saris Freedom 2 tray hitch rack that was pretty light. I could put it on by myself.
I now have a 1UP hitch rack and it is the BEST RACK EVER!!! they are not cheap but, it is very well made and has no plastic parts at all which I really liked about it. I added the fat bike kit to mine and will just keep it on my Jeep 365 days a year since I do Winter riding as well. Holds all styles of bikes and only touches the tires on front and rear so, not worries about damaging frames, paint etc.
2012 Trek Lexa SL
2012 Giant TCX2
2015 Trek Remedy 7
2016 Trek Lexa C
2016 Specialized Hellga-Fat Bike