Plugable Active Mini DisplayPort (Thunderbolt 2) to HDMI 2.0 Adapter (Supports Mac, Windows, Linux and Displays up to 4k UHD 3840x2160@60Hz) - Newegg.com
Tripp Lite Thunderbolt 3 USB-C to HDMI 4K @60Hz Adapter Cable, (U444-010-H4K6BM)
OWC Thunderbolt Dual DisplayPort Adapter for 4K, 5K, and 8K Displays
USB C to HDMI Cable Adapter 4K,QGeeM USB Type C to HDMI Cable Thunderbolt 3 Compatible
Thunderbolt 3 Dual Hdmi-copmatible Display Aadapter Usb C Hub Converter Support 4k Ultra Hd Display Type C Splitter For Mac Os - Docking Stations & Usb Hubs - AliExpress
Amazon.com: Warrky 4K Mini DisplayPort to HDMI Adapter, [UHD, Gold-Plated Plug, Aluminum Case] Thunderbolt to HDMI Converter Compatible for MacBook Air/Pro, Mac Mini, iMac, Surface Pro/Dock, Monitor/TV/Projector : Electronics
OWC USB-C Dual HDMI 4K Display Adapter with DisplayLink
Macally USB Type-C to HDMI 4K Adapter UCH4K60 B&H Photo Video