Layering fonts not shown correctly (or at all) if they have same font name, os2 font weight class

Summary:

I'm trying to use the "layering" fonts here https://creativemarket.com/ramandhani/4058114-Wincosin-Vintage-Package-Fonts When I install the Wincosin fonts (on Windows and on Macs) they install, but Inkscape doesn't show all the font variants. The only CSS style it shows is "Normal". When I select that option (I can't really select it since it is the only option) it only shows the Hatch Solid variant.

Steps to reproduce:

• open Inkscape
• Install Wincosin fonts (these aren't free)
• Other apps (LibreOffice/Word/Etc) recognize these fonts

What happened?

• Inkscape only shows one version of this font

What should have happened?

• Inkscape shows all version of this font

Version Info:

- Inkscape Version: 1.0
- Operating System: Windows (10) and Mac