Could I convert the swap primary to a linux entended partition which would incorporate the rest of my free space 18G. Then recreate the swap and other logical partitions.

These represent the partition types of the first, second, third and fourth primary partitions.

Learn how to make Linux-formatted NTFS Partition recognized by Windows 11/10. This partition will be compatible with both Windows and Linux.

With a hypervisor, I use one primary partition for the host OS, and guest OS images are stored as files. This setup is easier to back up, migrate, or upgrade than juggling multiple partitions.