I guess Remmina or Ásbrú Connection Manager is worth trying out. Need some recommendations for remote management I tried following this to fix the issue, and could get it to recognize the microphone as existing, but would either freeze up or just not work at all when I tried to use the microphone. Natively, it won't even detect the microphone at all. However, it's even worse, especially with respect to audio. I've tried everything I can think of to work around this, even installing the Linux app, Remmina, through terminal.

Well, I type 'ssh' for ssh in my terminal :) You probably mean a gui for everything together, right? I use Remmina for the windows remotes I have to use at work sometimes from my Linux machine, works good enough and supports all protocols you listed.

What are you using for Remote Desktop + SSH client? I'm not sure if it's been improved in the year since I last tried, but you could fudge it by creating a single window that was 2x monitors wide. The only thing that let it down at the time was a lack of 'clean' multi-monitor support. I had good results using Remmina () for RDP to a Windows host from a Raspberry Pi. Xpra: Multi-platform screen and application forwarding system for x11

Google chrome remote desktop extension