If you go to the Ignition Gateway → Status → Threads, it gives you a list of which threads are currently running like a process list. It categorizes them all, and provides up top a graph of how much processing is being used by each category. There is a “Tags” category on the graph, but things like
tag-provider-MQTT Engine are not in that category. They’re left “Unclassified”.
I feel like a tag provider would be the very definition of the sort of thing you would classify as “Tags”.