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If it was up to me I’d possibly be going for laptop #3 but certainly if you’re trying to save upfront cost you could go for #4.
If you’re looking to do any sort of gaming you would benefit from the on board video of #1, even if it’s not a massively performant card it will beat any sort of on board graphics.
I would note that any laptop that’s booting from a mechanical hard disk drive will feel a lot slower than one with a SSD. If any of them have an NVME SSD drive, the performance of these is normally absolutely stellar and would be worth going for in general.
Some are a bit easier to upgrade than others - if you have to take the entire thing to pieces to get to the SSD/RAM it can be a bit of a nightmare so it might be worth researching how to open the laptops - YouTube can be a good place to look at this. I once broke a HP laptop that was not designed with user access in mind, on the other hand I have changed pretty much every component possible on a ThinkPad with no real dramas.