Why would you rearrange it? If shading is a concern, don't worry about it. Almost any leafy green will tolerate some shade, and the shade will help with bolting.

You're fine.

I have black seeded simpson growing under/between my tomatoes, as well as under a cucumber trellis. No harm.

Hi Kristen. I'm not sure I understand your question. Did you plant all these plants from transplants you bought? And why do you think you need to rearrange it? If there were slow to start that's okay - they're just working on roots, rather than leaves and it takes a minute to get going. ;)

My concern is that it is late in the season for those plants, but I'm in SoCal so depending on your climate it might be fine!