What Breed Is My Dog?

I rescued my Chloe and was told she was a German Shepherd/Lab mix. Although she appears to have some of the Shepherd coloring and love for water and chewing things like the Labs; I've been told she looks like she may have some Pit Bull in her. I have looked around and see similarities with the Rhodesian Ridgeback/German Shepherd mix, but have no clue. She's 2 years and a couple months old, about 60-65 lbs, loves to play around, snuggle, and is super smart as long as you teach her with rewards. Any input is welcomed, thanks.