I think those might all be weeds- I see a lambs quarters for sure, a handful of some sort of annual grass (looks a little like corn), and one larger grassy thing that I would guess is a nutsedge maybe? Sorry.

I had similar plants grow - do you have a bird feeder? Mine was from bird seed.

Looks like crabgrass.

some kind of grass.

Definitely the tallest one is nut grass. A very bad weed to have. Dig straight down at least 6 inches and try to get the entire plant. It makes a thread thin dark brown root that goes down and has a "nut" on it. It also puts out white runners from the base of the leaves. Try really hard to get it all. It spreads like wildfire.

NEVER put them in your compost pile! I always throw them on the ground and crush the nuts with my foot. Then put them in the garbage.

The nuts will stay dormant in the soil for years and then return when conditions are right (wet). They can be conquered, but it takes dogged persistence.

If it's not nut grass, then it likely is crabgrass.

I think it's both

Yup. All weeds.
But at least you can eat the lambs quarters.

Yep, Lambsquarter, crabgrass, and nut sedge.

Weeds. Soon you will be able to positively identify a weed vs. A seedling :)

I think they look like corn. Did you plant any corn?

Lamb's quarters (edible, but don't let it go to seed!), nut sedge (Very Bad News), and definitely crabgrass (don't let it go to seed either!).

The "nuts" from nutsedge are edible if you're into that sort of thing.

Rodney

Here is a link that might be useful: Nutsedge: The Edible Garden Foe