Hi @ferexderta
In Site Recovery, as per latest maximums you can have 500 vm in a single protection group. You can separate them to 5 different priority group within the same Recovery Plan. By default every protected vm is in priority 3. Therefore you can have the expected result.
However in vSphere Replication the maximum protected vms number is 200 per server and only 20 vm replicated at the same time. Therefore you can do it only in 3 part.
If you need more information, please share the version of vsphere replication appl.
Regards,