Couple questions, which model H100i AIO pump do you have? And are the ML Pro fans you mentioned the ones included with the pump?
For all of our fans, the lighting won't match if they are mixed and matched on the same hub with different versions because the LED counts are different. For example: LL120 with ML120, or SP120 Pro with LL120.
If you plan to run different RGB fans in the same system, you will usually need a second RGB controller to plug the second model of fans into.
If you have an AIO that supports RGB fans (Elite Capellix or Platinum Series), you can connect the ML fans to the pump RGB connectors, and leave the LL120 fans connected to the Lighting Node Core.