The FCTM (well, the one I've got), mentions 4 different techniques. I don't remember them all. Stepping on the rudder and putting ailerons into the wind when flaring works ok up to max X-wind limit (36) and above.
Auto land (crab) in x-wind of 20 knots (certified) works ok if you don't mind a whiplash when touching down.
Some guys fly wing down from 100-150 ft. That’s ok too, but not if you haven't emptied your coffee cup beforehand.
The -700 is a ball to handle, the -800 is a bitch. That’s all I have to say on this matter.