Grub2 should be consistent across all distributions. With Fedora34, I am not able to link in Ubuntu, or Suse Leap, and V-V without creating chaining links.
/boot/efi/EFI/grub2/fedora/grub.cfg should just be a symbolic link to the directory /boot/grub2/grub.cfg.
Similar rule for all competing Linux Distros.
Regards
Leslie
Leslie Satenstein
Montréal Québec, Canada