WAVLINK Quad Display 5K 4K@60Hz USB C Docking Station, 19-In-1 USB 3.0 Laptop Dock for Thunderbolt 3/4, M1 M2 Mac&Windows, 4 HDMI, 4 DP, 2.5G RJ45,180W AC Power Supply,10Gbps Data Transfer,SD/TF,Audio: Amazon.co.uk:
Add Four Displays To Your Mac with Targus USB-C Universal Quad HD Docking Station - The Mac Observer
i-tec USB-C Quattro Docking Station for 4 Displays with Power Delivery 85W - 2x DisplayPort, 2x HDMI, 1x GLAN, 5x USB 3.0, 1x USB-C, 2x Jack for Audio and Microphone: Amazon.co.uk: Electronics
Connect four displays to a MacBook Pro with the Targus Universal Quad video HD Docking Station | AppleInsider
i-tec USB 3.0/USB-C/Thunderbolt, 3x Display Docking Station + Power Delivery 100W
Anker's 778 Thunderbolt 4 Docking Station Can Run Four Extra Screens
Dell Thunderbolt 4 Dock WD22TB4, USB 3.2 Gen 1, HDMI, Display port