Many versions of the linux-headers package installed

I am running an Ubuntu 22.04 on GCP. When I perform

$ apt list --installed | grep -i headers

I see more than one version of the package

linux-gcp-X.Z-headers-X.Y.Z-ABCD/jammy-updates,jammy-security,now...[installed,automatic]
linux-gcp-X.Z-headers-X.Y.Z-VHCJ/jammy-updates,jammy-security,now...[installed,automatic]
.
.
.
.
linux-headers-X.Y.Z-ABCD-gcp/jammy-updates,jammy-security,now ...[installed]
linux-headers-X.Y.Z-VHCJ-gcp/jammy-updates,jammy-security,now ...[installed]
.
.
.
linux-headers-gcp/jammy-updates,jammy-security, now... [installed, automatic]

1. Why are there so many version of the same package 2. Which one is actually been used? 3. Why the two formats, i.e. linux-gcp-X.Z-headers-X.Y.Z-ABCD and linux-headers-X.Y.Z-VHCJ-gcp (as also a third, cleaner one, linux-headers-gcp)