Listings on CLEO are mirroring Binance data so all perpetual futures pairs and altcoins that are listed there are available to you. Once the exchange lists or removes an altcoin, it’s reflected in the platform as well.
Prop firms may choose to not feature some pairs, that is up to them. The CLEO Trading Platform reflects all Binance listings.
If your prop firm offers another exchange through us, like Bybit or OKX the same applies.