Mixed up squash - please help with identifying!

Morning all!
I posted in this forum a few weeks ago, "Worried about my warm season vegetables" and got a lot of help from everybody, but now I have a new issue I need help with!
Thankfully my summer veggies survived their time in the plant shanty and are thriving, but after several of my plants got pretty big I had to pot then up before the weather was finally trustworthy enough to put them in the ground.
I, unfortunately, forgot to label then when I potted up. Some of the plants are pretty obvious (peas, beans) and I was able to noodle out which ones were the sugar baby water Melons, but I'm still having trouble identifying my squash. I have zucchini (specifically black beauty) and pumpkins (baby boo and mandarin)
I'm not worried about distinguishing between the pumpkins, they're just gonna get planted together (although if you can I will be sufficiently impressed!)
But could you guys help me separate my zucchini from my pumpkins?
I thought I did okay, I used detailed pictures of the cotyledons on seedlings for my varieties, that was how I was able to successfully separate my watermelons before they had true leaves (which have now been confirmed by growing very obviously watermelon leaves). I used the same method to try and identify the zucchini vs pumpkins, and trellised the ones I thought were zucchini. But now they've got more/bigger leaves and I'm starting to question my plant judgement haha

At this point, to me they all look the same. As the next leaves come in, keep an eye out-- I think my zucchini leaves are way more angular than the pumpkins (like the new leaf coming in on the plant in your first picture, maybe?)
How about hairiness? are the varieties distinctive that way, that maybe you could tell? I think the stalks on zucchini are hairy.

Hey Teresa!
Due to the conditions they sprouted in, I think all my plants are a little wonky.
None of them have hairy stems (even though I know for a fact some of them were zucchini, pack when they were in labelled peat pellets) but maybe that is something to come?
There is exactly one plant with hairy LEAVES, picture #5, could that be a zucchini trait?
Thanks for taking a look!
As they grow I'll post pictures!

I think both will have hairy leaves, unless you have some exceptional cultivar. I think maybe the pumpkin vines are hairless, but now that I think about it i'm not sure, it's been a while since I grew pumpkins (normally I do other winter squash). Hopefully someone else with more experience or plants in the yard right now will be more helpful!