Blender on Linux - list of AMD GPUs that work with Cycles/OpenCL Which AMD GPUs are useable with a recent Linux, more specifically Ubuntu (18.04) and AMD drivers? Or are there some that definitely don't work?

This question is not off topic because either a GPU evidently works with Blender or it doesn't, so it's not about subjective hardware recommendations.

Thanks in advance.

P.S.: The open source OpenCL implementation of Mesa still doesn't seem to work, or did someone get it to? Because if possible I'd of course use that instead of the AMD drivers.
This is a list of AMD GPUs known running together with OpenCL and Blender Cycles. It is composed by either personal experience or from sources on the web:

╔═════════════════════╦═════════╦════════════╦════════════╦════════════╦════════╗
║         GPU         ║   OS    ║ OS version ║ Blender v. ║   Driver   ║ Source ║
╠═════════════════════╬═════════╬════════════╬════════════╬════════════╬════════╣
║    Radeon cards     ║         ║            ║            ║            ║        ║
║ RX580               ║ Xubuntu ║ 18.04.02   ║ 2.8beta    ║ OpenCL-Pro ║      5 ║
║ RX580               ║ Linux*  ║ N/A        ║ 2.79       ║ N/A        ║    1,3 ║
║ RX470 4GB           ║ Kubuntu ║ 16.04      ║ 2.78       ║ AMDGPU-Pro ║      2 ║
║ RX Vega 64          ║ Arch,   ║ N/A        ║ 2.79       ║ AMDGPU &amp;   ║      4 ║
║                     ║ custom kernel, libdrm downgrade   ║ AMD OpenCL ║        ║
║ RX480               ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
║ RX Vega 56          ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
║ RX Vega 64          ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
║ RX Vega Frontier E. ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
║ Pro WX 7100         ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
║ Pro WX 7100 DUO     ║ Linux*  ║ N/A        ║ 2.79_build ║ N/A        ║      3 ║
╚═════════════════════╩═════════╩════════════╩════════════╩════════════╩════════╝



* likely Ubuntu or a derivate (officially supported), see this comment. Also means that AMDs OpenCL implementation must've been used, as there's no other known working so far

sources:
1, 
2,
3
4: user gandalf3
   5: myself, using Xubuntu 18.04.02 with an all open stack (standard) plus the OpenCL portion from the closed AMDGPU-Pro driver


This list is obviously far from complete, it's just meant as a start. I'll gather more and more information in the near future.

Feel free to edit, improve and add to this list to complete it and make it comprehensive in the end!

P.S.: The table was made with https://senseful.github.io/text-table/, as the standard SE markdown does not support tables in any way, see here.