Element.ParamerExists looks to work, but only for Instance Properties. I need a similar node but for Type Properties. Been looking for a while now.
If you edit the custom node element.ParameterExists you will see how this node works, so you could change it a little bit with others nodes as shown in the picture:
change your selection into types!
what you get from “Select Model element” is an instance, add the node “Element.ElementType” and you change your selection into a type.
However, if you want to use the node “Select Model elements”, this might give your the same type several times, so filter the output to unigue items.
After this you can add whatever you want to do with types.