I got tired of looking for a solution so I made my own Dual Rivian Torch charger for less than $20 in parts and some 3D design and print. Printed on a Prusa Mini.
https://www.amazon.com/dp/B07PRJRHHB?ref=ppx_yo2ov_dt_b_fed_asin_title
https://www.amazon.com/dp/B09NKGVSZ8?ref=ppx_yo2ov_dt_b_fed_asin_title
The author marked this model as their own original creation.