Purslane and look alike plant – what is it? Answer found.

I’m trying to describe the difference between purslane and another garden weed that grows near it that is not succulent but looks very similar to purslane . Do you know what it is? Update: It is Amaranthus blitoides (mat amaranth; prostrate pigweed). It is NOT prostrate spurge (Euphorbia maculata) which is toxic (skin rash and more).