Different hotkeys between Edge and Chromium-based Edge

The old Edge is based off of Edge HTML code/source (Microsoft's own engine) while the upcoming (now Beta versions) of Edge is based off the Chromium Project. Google Chrome and Edge Chromium (along with some other browser makers) are sourcing off "Chromium" edge, so why the hotkeys are different than Edge HTML but more or less the same as Chrome. Edge Chromium is putting a far better slant on things though. I don't know if MS can add in the hotkeys used in Edge HTML as it's a different source code/engine than Edge C, but the hotkeys for Edge C is about the same for Google Chrome. It's a matter of just getting use to the new Edge C hotkeys for those transitioning from the old IE/Edge. For those transitioning from Google Chrome there's isn't a lot of different in that area and they'll feel right home even to the point of easily and smoothly transitioning over from Google Chrome to Edge Chromium. Even accessing flags is the same such as "chrome://flags" compared to "edge://flags".  Mozilla is on their own engine called "Gecko" for their Firefox browser. Gecko was used in the later versions of Netscape, and is also used by Lunascape and Waterfox. Here's is a picture I snipped of Google Chrome and Edge Chromium menu side by side and as you can see the hotkeys (and in many ways the menu) are the same: