Antenna options for vehicle roof rack mounting

Getting a new camper van. This one has a roof rack, so I’m considering mounting antennas to the rack, where on the old van, we drilled the roof for direct mounting of antennas. Router is a MAX BR2 Pro 5G, so ultimately 8x5G, 2xWiFi, 1xGPS needed (though could be on more than one antenna). New van has a roof access port, so not planning to drill additional holes as easy wire access from roof to inside is provided.

Which Peplink antennas require a ground plane? Are there any roof rack mounts on the market that work with these?