Hello all, I'm new here!

So I have been searching EVERYWHERE for an answer to this, and cannot seem to find one (see the title).

Linux is my main priority for the z370 chipset, and that Gigabyte MOBO has everything I could possibly want for a Linux server/desktop PC build...unless it just doesn't run Linux well (or at all). =/

Anyways, any help would be greatly appreciated!

Welcome to LQ.
Did you try google? In your honour I did a basic search Basic Google Search One does before posting
Short answer appears to be:No problem, but you read them and check.

Which distro do you want use?

New kernels support new hardware.

You can check out the support of your new hardware with the live system of a brand new linux distro. Like Ubuntu 17.10.
Here: http://releases.ubuntu.com/17.10/

The OP hasn't bought the MB yet as they are asking about compatibility before buying.

How are you doing the search ? Are you searching only for Gigabyte z370 boards or any other make (MSI, ASUS ...) with a z370 chipset ?

I did search Google, however there is no mention that the specific MOBO I wish to buy (Gigabyte z370 Aorus Gaming 7) has worked well with Linux, specifically Ubuntu 16.10+ and Linux Mint. I'd rather not risk buying a MOBO that has issues with Linux, as that is my primary reason for wanting to buy it.

I have also never run a Linux OS of any kind before, so I am not entirely sure how to optimally check for driver compatibility (besides checking the manufacturer's website, Linux compat. sites, and searching for that specific MOBO to be mentioned by people, which it wasn't). Others have had issues using Linux in the past on different MOBOs, and Aorus is a smaller/newer company, so I wasn't sure what they support Linux-wise.

I was searching for Gigabyte boards, the specific MOBO model I wish to buy, and other brands/the z370 chipset, however one MOBO from Asus working doesn't mean that the one I buy will work as well.

Aorus is not a company at all. It is just a marketing name for a Gigabyte model line. The company is Gigabyte. Asus has "ROG Strix" and "ROG Maximus", ASRock has Z370 "Killer". They are marketing names.

I would not be fixated on specific distros that are a year or more old. You may need to use the latest kernel and so use the newest distributions.

It does mean that there is Linux support for the Intel z370 chipset.

With motherboards, the chipset, graphics, bluetooth and sound are the things to check, more or less in that order. A lot would put the onboard graphics first.
chipsets: nearly all supported, except the ones that came up on the last load
Graphics: All supported; but this is a bit like an F1 race, where you're trying to predict how well your car will do.
Bluetooth, wifi (& webcam) These can be iffy, or awkward but all are accommodated.
Sound: Nearly universal support, but some crap is out there. The quality of the card varies more than the quality of support.
These days manufacturers hire kernel devs to write drivers for their stuff, and people like Red Hat have their devs on there too.

This is the proof of it for me. Back around 2000, when support was much flakier, I got a motherboard which had: Via MPV3 chipset (incorporating the infamous 'Via hardware fault'); SiS 6326 Graphics; Realtek 8139 network card; Creative soundcard with an es1371 chip; 6 usb ports in the Via Southbridge. I still got linux running well, although every one of the above gave issues. The hardware fault was only with soundblasters, and the es1371 chip actually did next to nothing, all the intelligence being in the windoze driver. I got rid of that. The graphics lacked the 16 basic modes every distro uses to boot initially, but a kernel rebuild sorted that. The nic only worked on one irq (pre PnP days), so I gave it that and configured everything else that was upset. The usb ports took me to playing troll on a Via hardware forum. They assigned me to a software guy, and he patched the usb module to spew register info to syslog. That went off to the kernel developer who produced a patch, and that went away. Via quickly disabled the 2 problem ports.

These days, nobody has that sort of horror story. It's the dirty thoughts in the Bios are the only real hurdle left.