Nikon Z 6 and Z 7 battery grip officially announced, and here are the details | Digital Camera World
Amazon.com : NEEWER MB-N11 Replacement Vertical Battery Grip, Compatible with Nikon Z6 II & Z7 II Camera and EN-EL15c Battery for Vertical Shooting with Shutter Release, Main Dial,AF ON Button & 1/4"
Best price Jupio Battery Grip for Nikon Z5/ Z6/ Z7 (MB-N10) | Photography – VL Camera Photographic Store
Vello Battery Grip for Nikon Z6 II and Z7 II Mirrorless BG-N22