Linux

Mint is lovely, as are all other Linux distros. However, if you want the latest stuff without going off piste and compiling it yourself, then a rolling, bleeding edge distro might appeal to you. You do mention that you have prior Linux experience.

I own a UK based IT company (as you do) with two other partners (I'm MD and not a doctor) and a slack handful of (lovely - obvs) employees. I personally like Arch on my gear. I used to sport Gentoo but my nadgers complained about being overheated too often. I still have a fair few Gentoo VMs lying around the place.

You might like to try a https://manjaro.org/ effort - I prefer the Plasma desktop spin (KDE). That's Arch with a few more GUIs. Their Konsole is quite something with zsh and a very stylish prompt.

So far I have managed to get Linux to work on everything I have access to which is rather a lot of hardware. Back in the day wifi was a bit wanky and there was ndiswrapper but nowadays I generally find that laptops from HPE and Dell are just as well supported with Linux as Windows, often better.

I finally ditched Windows on my stuff at Windows 7 - that was my wife's laptop - a GPU update screwed up and that was the final straw. She has been an Arch user for a good seven years and could not give a shit about what is running on her laptop, provided it works and does stuff.