#2 looks like Sweet Basil — like 5 or more of the largest seedlings in the 2nd pic.

Who's mix is it? Many companies mix is mostly made up of the seed they carry.

3 looks like opal basil, 4 might be a lemon basil.

tj

Is there a list of varieties on the seed package or from the supplier? You could do an image search for those to compare with what's growing. There are many kinds of basil.

And scent can be an indicator too - like if it's lemon or lime basil.

Thanks