The best tripod plates for this situation, I've found, are those that are considerably longer than the depth of the camera and have a couple of good, thick rubber inserts that extend beyond the front and rear of the body. When the plate is tightened into place, the grips mould around the front and rear edges ever-so-slightly, providing a more secure hold than smaller plates.
Manfrotto-style sliding QR plates are great, and there are some decent, cheaper third party equivalents. Obviously you need the appropriate head for the plate (see example attached).
I use some inexpensive third-party sliding QR plates with my Manfrotto head, and they hold my Hasselblad HV + Tamron 70-200/2.8 USD in portrait orientation quite securely - though I think it helps that the underside of the camera also has a rubber insert...
Last edited by BigMackCam; 12-31-2021 at 01:31 AM.