Most docks work fine but the HDMI and USB ports are blocked. Luckily I don't use either of them for anything significant. VGA and power work fine.
π LENTION USB C Docking Station - 100W PD, 4K HDMI/DisplayPort, VGA, Ethernet, Card Reader, USB 3.0/2.0, Aux Adapter - Compatible with 2016-2020 MacBook Pro, New Mac Air, Surface, and More (CB-C95) - Space Gray
11 Review
Enhanced HP USB-C/A Universal Dock G2 - Optimal for Seamless Connectivity (Part#: 5TW13AA#ABA)
11 Review
Dell 452-BCYT D6000 Universal Dock in Black: A Hassle-free Single Solution
17 Review
Universal Laptop Docking Station for Windows and Mac - Plugable USB 3.0 Dual DisplayPort 4K Monitor with Gigabit Ethernet, Audio, and 6 USB Ports
12 Review