Can all USB Type-C to Type-C cables themselves handle 100 W?
Don't do this.

Always think about the user. The user sees a USB port and WILL connect it to another USB port of his PC.

Instead, go for exemple with some kind of M8/M12 connector. Those can be nicely integrated into your housing, you get it with all kinds of connector configurations and the user is unlikely to plug it into a USB port.