Beginner Gardening: Mixed up veggies. Pls help!, 1 by Bkgirl

Bkgirl wrote:
Hi! Can someone please help identity my plants? I've planted pickling cucumber, zucchini, and yellow squash in trays. Planted them outdoors and started some more. This time I mixed up my labels. I THINK I know which are the cucumbers but can anyone help me out maybe by looking at the leaves? I'd like to know before I randomly plot them into the ground. I'd like them to go with the others in the right areas. I'm attaching 3 pics. The only thing I know for sure is that all 3 are different because they're in rows. Thanks in advance!!