Syncthing is tricky to get working properly all the time + it drains quite a bit of your mobile devices battery life in my experience.

However a co-worker recently shared this interesting FOSS project, EmulatorJS, it’s self host-able RetroArch, playable from your browser:
https://github.com/EmulatorJS/EmulatorJS

I haven’t played around with it myself yet, but it sparked my interest, because it would mean you don’t need to sync saves between devices, but still can continue playing from your save from any device which can open a browser.

I haven’t tested out the PS4 emulators myself yet,
due to them still being in their infancy, so I’m not expecting great play-ability yet.

shadPS4 currently is the most promising PS4 emulator though,
in their FAQ they mention the minimum system requirements:

• https://github.com/shadps4-emu/shadPS4
• https://shadps4.net/index.php/faq/

However, these requirements likely will not suffice / appear very low to me,
which they also do mention in their FAQ.

Also, if you’re interested,
I’ve collected all the open source emulators which I know of
and/or used in the past in a Github list (currently has 111 entries):
https://github.com/stars/Rikj000/lists/emulation

Nearly all of them.

A better question would be,
which systems can not yet be emulated on PC.

E.g.

• PS4 emulation is still in it’s infancy stage,
  barely runs games, and has high demands
• PS5 emulation does not exist yet afaik

Wikiless?
The original project was taken down by Wikipedia, but this appears to be an active fork of it:
https://github.com/Metastem/wikiless

Legacy software still requires maintenance.
Legacy dependencies still require to be used in new projects.
Dual booting multiple times a day is not feasible.

For those reasons none of my co-workers can fully switch to Linux.

I write PHP on the daily and don’t understand the hate it gets :/

At least I can work on Linux at home while my co-workers are stuck on Windows with their C#

After searching in the Suyu Discord,
these 3 mainly came up:

• https://github.com/ryzendew/Lime-3DS-Emulator
• https://github.com/Gamer64ytb/Lemonade
• https://github.com/wheremyfoodat/Panda3DS

Seems like Lime-3DS is currently in the lead regarding popularity.