I am sure more companies will soon follow this path, but Tesla may be holding even more than 0.56% of BTC supply if we know that many Bitcoins are lost forever that reduces it's real supply.

Maybe you can also consider adding separate page for Grayscale and similar investment trust companies that are not holding Bitcoin themselves like Tesla, MicroStrategy, Square and others, but they it is something I would like to see on Coingecko website.
Currently I can check this only on Grayscale official website or on bybt website:
https://www.bybt.com/Grayscale