I recently switched to vertical tabs in FF (Sidebery) and it is an incredibly better approach. Why the hell is this not built in to the browser??? It is lame that Mozilla isn't baking this kind of core functionality in. On top of that, they make it a PITA to kill the stupid horizontal tabs.
Supposedly Edge has a vertical tabs option. Chrome doesn't seem to even have a plug in for it.
Perhaps because they are still on very small monitor where horizontal space is precious, Mozilla is FLOSS but definitively not a free project, they act as a corporate one so maybe they have some guidelines written in the era of 1024x760 CRT monitor, I can't tell...
However I'm glad I can have them (hiding the tab-bar also to avoid clutter) since with them I can have many tabs open, seeing a sufficient amount of text to identify any and sparing precious vertical space on my modern normal 19:9 monitor...
I do not use Windows, thankfully, so I do not know Edge, I've looked for something similar for Chromium but finding nothing like you... Honestly I see modern WebVM improperly named browsers for legacy reasons as a necessary evil since unfortunately the modern world is web2.0-centric and I have not much choice for that, but I have not much expectations from both nor not much interests beside the minimum protection and ergonomic of my daily digital life...
Supposedly Edge has a vertical tabs option. Chrome doesn't seem to even have a plug in for it.