I don’t if this is the right CLI to find kernels, but…
I can’t get a good image of the GRUB menus.
ls -l /boot/
total 203672
-rw-r--r-- 1 root root 273109 Sep 11 09:20 config-6.4.0-150600.23.70-default
-rw-r--r-- 1 root root 273168 Oct 7 07:40 config-6.4.0-150600.23.73-default
drwxr-xr-x 3 root root 16384 Dec 31 1969 efi
drwxr-xr-x 6 root root 4096 Oct 15 19:23 grub2
lrwxrwxrwx 1 root root 33 Oct 15 19:23 initrd -> initrd-6.4.0-150600.23.73-default
-rw------- 1 root root 63352959 Oct 6 19:54 initrd-6.4.0-150600.23.70-default
-rw------- 1 root root 63350526 Oct 15 19:23 initrd-6.4.0-150600.23.73-default
-rw-r--r-- 1 root root 1586274 Jun 12 2024 symtypes-6.4.0-150600.21-default.gz
-rw-r--r-- 1 root root 1603233 Sep 11 09:39 symtypes-6.4.0-150600.23.70-default.gz
-rw-r--r-- 1 root root 1603382 Oct 7 07:58 symtypes-6.4.0-150600.23.73-default.gz
-rw-r--r-- 1 root root 366201 Sep 11 09:38 symvers-6.4.0-150600.23.70-default.gz
-rw-r--r-- 1 root root 366247 Oct 7 07:57 symvers-6.4.0-150600.23.73-default.gz
-rw-r--r-- 1 root root 484 Sep 11 09:38 sysctl.conf-6.4.0-150600.23.70-default
-rw-r--r-- 1 root root 484 Oct 7 07:57 sysctl.conf-6.4.0-150600.23.73-default
-rw-r--r-- 1 root root 7654367 Sep 11 09:36 System.map-6.4.0-150600.23.70-default
-rw-r--r-- 1 root root 7655676 Oct 7 07:55 System.map-6.4.0-150600.23.73-default
-rw-r--r-- 1 root root 15990629 Sep 11 09:42 vmlinux-6.4.0-150600.23.70-default.gz
-rw-r--r-- 1 root root 15992099 Oct 7 08:01 vmlinux-6.4.0-150600.23.73-default.gz
lrwxrwxrwx 1 root root 34 Oct 15 19:23 vmlinuz -> vmlinuz-6.4.0-150600.23.73-default
-rw-r--r-- 1 root root 14213600 Sep 11 10:13 vmlinuz-6.4.0-150600.23.70-default
-rw-r--r-- 1 root root 14214240 Oct 7 08:33 vmlinuz-6.4.0-150600.23.73-default