Yes there is always a way, just more nodes etc.
Just to be clear you want to have a total of each furniture and also its manufacturer's name from Revit to Excel in one workflow? Then if you want to change furniture's info you will change it in excel and feed it in to Revit via Dynamo?
I think it will be best if you can provide excel example and the graph you have so far. There are a lot of Revit to Excel and Excel to Revit query in the forum. There are many ways to deal with this, this is because the answer you will get depends on who's giving it to you, some may do it via python, custom nodes and built-in nodes. I normally tried to use built-in nodes so it will be clearer.
Anyways I will try to help you as much as I can, so if you have example files it will greatly help.
Again everything is possible, just the timing is always problem.