some files included in the initramfs are duplicated in the initramfs-extra
some dependencies of things in the initramfs are also needed by things in the initramfs-extra, and are being duplicated in the initramfs-extra. This is completely unnecessary and increases the size of the -extra archive.
Extract /boot/initramfs-extra
cpio: lib/ld-musl-x86_64.so.1 not created: newer or same age file exists
cpio: lib/libc.musl-x86_64.so.1 not created: newer or same age file exists
cpio: lib/libdevmapper.so.1.02 not created: newer or same age file exists
cpio: lib/libudev.so.1 not created: newer or same age file exists
cpio: lib/libudev.so.1.6.3 not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.alias not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.alias.bin not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.builtin not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.builtin.alias.bin not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.builtin.bin not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.builtin.modinfo not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.dep not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.dep.bin not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.devname not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.order not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.softdep not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.symbols not created: newer or same age file exists
cpio: lib/modules/6.2.2-0-edge/modules.symbols.bin not created: newer or same age file exists
cpio: usr/lib/libudev.so.1 not created: newer or same age file exists
Since everything is a filelist
now, which are kinda like sets, this should be fairly straight forward to resolve.