Hi Nick, sorry for not being clear, but I am looking to find a way to check which Materials are using certain Material nodes (Texture Sample, Static Switch Parameter, Quality Switch nodes for example).
The blueprint tool was an analogy to the perfect solution, where you search for a BP node and it shows all the BPs that are using that node (found under Tools > Find in Blueprints), except that it works for materials instead of Blueprints.
I believe the python API doesn’t have anything exposed to get such information from materials, though. unreal.Material — Unreal Python 5.3 (Experimental) documentation