Ventoy or LiveUSB if you just want to poke around. There honestly isn't much difference between all distros anymore aside from package management, and that is somewhat being a bit pushed aside due to portable package distribution.

What exactly are you hoping to find or test?

You can split your ssd into a bunch of partitions install different distros in each, edit your bootloader config to make entries for the other partitions

If you install one of the Fedora Atomic distros e.g., Silverblue, you can rebase to other atomic distros e.g., Bazzite very simply with a single command and reboot.

QuickEmu makes distrohopping in VMs easy.

https://github.com/quickemu-project/quickemu

A better question is what do you think is missing from the distribution you are currently using?

You can use LiveUSB. If you want to try them with their installation processes, you can try them on VM (e.g. QEMU).

Using VM may not reflect real hardware, tho. For this, I'd suggest more than one laptop. If you don't have a spare, some cheap office surplus might help.

If you want to just use that one laptop, but don't want to burn out your disk drive when you try out different installations, you can always use external drives.

https://distrosea.com/

distrobox?

I'll preface my comment with I understand my setup is no where similar to yours, but I'll share my setup to hopefully give you an idea as to what you can do.

My desktop is running Unraid, and I've set it up with GPU pass through. This lets me spin up a machine with its own virtual drive with the OS installed. My other main folders (Documents, pictures, etc...) connect via network folders.

Pro: Can try out a bunch of OSs easily, and I don't really care if I nuke my OS drive.

Con: The GPU passthrough can be very finicky. Admittedly, It was a struggle to get everything setup initially; but I think Unraid is working on streamlining that process.

I'd also recommend looking into setting it up in Proxmox first if you want to try this route. Proxmox is free, and Unraid is paid; so if you just want to play around with the idea, try the free version first.

Hope this helps!