This is based off of one picture of each, in real life and on the move it could all be different but here goes. Right or wrong this is how I see them
4-1-2-3
#4 has balance, is deep sided, good hipped, decent length and has a nice topline, she looks like she could produce calves for you to build your herd off of. It should not be hard to find bulls that compliment her. (she took a good picture)
#1 a Deep bodied heifer, does not appear to have the length of the #4 heifer, she does have a meat maker look to her with adequate structure. Would not be a bad fall back heifer, if #4 is not available, should still produce a good calf you can grow your herd with, she looks like she may be a bit large when she hits maturity. I would use real maternal bulls on her (a different angle in the picture could have changes the way she looks in length)
#2 is not near as deep as the #4 or #1 heifers, she has good length and balance but she lacks the capacity of the first 2 heifers. She is the least feminine of the 4, has a bit more leather up front as well. She would not be a heifer I would want to start a herd from. (I think she is what she is a different picture would not change her look much)
#3 Her front third is fine, she has body but from there she falls apart for me, she looks like she is roached toped and is weaker in the hind quarter, she has more middle than the #2 heifer but structurally I had to put her on the bottom. (This heifer more than any may have fared better with a different picture, she may not roach at all and foot placement could change everything in the rear third.) I would take another look at her and see if it was the picture or the heifer. If it was the heifer and not the picture I would stay away from her as a cow prospect.