I use Edge as a third option browser.
Mainly use FireFox
Secondary is Google Chrome
Opera used to be my third browser but I dont use it anymore, prefer Edge over it especially since Edge uses Chromium's code. (Used Chromium before and liked it years ago).
IE is just a last alternative in case if I ever need it but Edge looks like it'll replace that spot especially since IE is going away next year and Edge is going to become the next default Windows browser going forward.