I use this one: https://www.amazon.com/gp/product/B06XNS7W63/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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but even a straight USB-C to HDMI cable works (without charging though).

This one works!

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https://www.amazon.com/gp/product/B06XNS7W63/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Cable Matters USB C to HDMI Adapter