What is this plant? Green and leafy

I hope this is not in the wrong area and if it is then some kind person will tell me where to go from now on

So I have a hard time identifying plants that don't have extremely unique appearances as I'm new to this. However, I REALLY want to be an expert forager one day. So I need help identifying a lot just starting in my yard.

This one is a big deal to me because I'm hoping it is Lamb's Quarters. It might seem silly that I wouldn't know considering I planted it, but all the pictures I've found online look ever so slightly different than what I have.

And just a few more pictures. The very first one may be a different plant or maybe it could just look a little different because of getting less light?

Pretty sure it's not lambsquarters. I have to import lambsquarters, but I found some in a nearby farm. So with shovel I go.
William

On anothe rforum I was told that the one that is different is probably poke weed. The one I am most curious about, though, is getting replies of either fireweed or Erechtites hieracifolia. I think it could be the latter as I've looked up pictures and there are a few that look exactly the same.

It seems to me the telling will truly be when/if it flowers.

Doesn't look like pokeweed either. Pokeweed I think doesn't have serrated edges, and there's not enough red in the stems. Maybe those other ones are it...
W

The first one in your second post is pokeweed . Neither is lambsquarters which has a goosefoot shaped leaf. Have no idea on the one with serrated leaf. I have alot of lambsquarters this year - thousands came up in my garden - resistance is fertile ! Poke I always have alot of.