Tradovate/NinjaTrader is supported.
When you add an account, just select Tradovate/NinjaTrader and fill required information.
Here's our video tutorial on how to add a Tradovate/NinjaTrader account: https://youtu.be/Rrz0eKvAraU?si=e8SEDXY75mV9oRGb
You can mix brokers from the following trading platforms: MT4, MT5, cTrader, DXtrade, Tradovate/NinjaTrader, FXCM, LMAX, FIX API, Fortex,...