How can I change name of bootloader?

I have Manjaro installed on GPT disk
sda1 EFI partition
sda2 system/data disk

If I remember correctly during Architect installation I chose Manjaro as a name
I believe the command looked like this:
grub-install --target=x86_64-efi --efi-directory= *esp* --bootloader-id=Manjaro

In my UEFI I have Manjaro on the list with bootable devices.

Can I change this name with config files?
Or maybe I could reinstall grub with different --bootloader-id= ??

Edit the file /etc/default/grub

Replace Manjaro with MyLinux and rebuild config

$ sudo grub-mkconfig -o/boot/grub/grub.cfg

I don’t know it is possible without recreating the boot entry - first find your the number

efibootmgr | grep Manjaro

Then replace XXXX with the number found

$ sudo efiboogmgr -b XXXX -L 'MyLinux'

If this is not possible you easily run

sudo grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=MyLinux

Then delete the Manjaro entry using the ID

sudo efibootmgr -b XXXX -B