One thing that might matter is that if all distros use the same swap partition for hibernation, you shouldn't boot one distro after hibernating another or you might overwrite the saved RAM contents.
If you use different swap partitions or files, you probably should still avoid writing to a partition that belongs to a distro that isn't actually shut down.
I FIXED my CAPSLOCK KEY to FINALLY enable CRUISE CONTROL for COOL
Adapter cards for one PCIe M.2 SSD are completely passive and work on every motherboard with PCIe. If the card has multiple M.2 slots, you need either a PCIe switch on the card or a motherboard that supports PCIe bifurcation.
I upgraded an old machine that doesn't have PCIe 3.0 or M.2 slots with a Samsung 950 Pro in an adapter card and I haven't noticed any issues - the SSD only runs at PCIe 2.0 speeds, but that's fast enough for me.
Sometimes plugging a PCIe card into one slot will cause fewer or no lanes to be allocated to another slot, so you should check your motherboard's manual before buying a new card.
If your machine doesn't have UEFI, only a few early NVMe SSDs are bootable, for example the Samsung 950 Pro. If you can't find one, you could try installing the bootloader on a USB stick.
In a manual and EVs, when you take your foot off the brake, nothing happens.
That depends on the car's software - my mother's Renault Zoe slowly accelerates to about 5 km/h if you take your foot off the brake.
U+202E and U+202C are control characters that change the direction of the text (see also https://www.explainxkcd.com/wiki/index.php/1137:_RTL)
In order to be able to type them, you can use HTML entities: https://www.w3schools.com/charsets/ref_utf_symbols.asp
You can write any Unicode character like that, for example a becomes a.
You might be able to circumvent an automatic filter by writing ‮lm.ymmel‬ - that should be rendered as lm.ymmel
I think the easier solution would be not to use hibernation - either shut the system down properly or use suspend-to-RAM.
If everything works, the bootloader should be whichever GRUB version comes with the distro you install first and the other distros' installers should just add entries to boot them.