According into this link and seeing top post.

It is supported but not through its own wallet interface yet you have to use a third party wallet interface but dw your coins will still be ON the Trezor. You will just have to look, send and receive the coins through another interface. Go to Trezor Coin List and it’ll show you what wallet interfaces are available for each coin

https://www.reddit.com/r/Ravencoin/comments/esawge/ravencoin_on_the_trezor_model_t/

which do gives out this list https://trezor.io/coins/

Raven could be stored in    Chaintek , Electrum-RVN , Mango Farm.