The Good news for you is, there is no high level scripting is required to achieve what you want..

Here are some cool and easy to operate stuff about multiple VMs snapshot creation..

http://www.techiessphere.com/2017/02/taking-multiple-vms-snapshot-vmware.html

http://www.techiessphere.com/2017/02/multiple-virtual-machines-snapshot-import-csv.html

To delete the VMs, you may use below command on POwerCLI:

get-vm | Get-Snapshot | where {$_.name -match "newsnapshotclitest"}| Remove-Snapshot

(This command will delete all snapshot matching the name "newsnapshotclitest" from all VMs, so use it carefully after understanding it well and testing it on test environment first).

Thanks,

Amit