Is there any node could identify what element type is appeared at a specified point?
What have you done so far? Can we see your graph? 
What I am doing is to identify if there is any floor modeled besides each beam and want to check their thickness.
What I have done so far is to generate a list of points besides each beam.
In that case, a raybounce might work? It will return the element it hits and you can get element type from that.
Oh yes! It seem to be fit for my use. Thank you very much!
Let me try and see if it work in my model.