Here is another one.

This is a volunteer in my tomato tub.

Third one looks like a curcurbit of some sort (squash, cucumber, pumpkin, etc.)
Gary

In the second pic, there is a plant in the center left with two white stripes down the center of the leaf......that is bamboo. I hate to say this, but kill it now or you'll never get rid of it.
=(

In the second photo, the yellow-stemmed one with the pointy leaves (one of which has two yellow stripes) looks like a bamboo of some sort.

The third is certainly a cucurbit.

bamboo is really kewl,,but yeh it will invade and be the only thing growing. It makes for a great living privacy fence though !