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Looker + a bridge tool like Supermetrics is the gold standard. It’s as clunky or as streamlined as you want to make it.
Pretty much any data viz tool will accomplish what you are looking for out of the box, just with limited ability to parse the data or structure it in the ‘ideal’ way. Databox, agency analytics, etc. are places to start but there’s dozens of competitors out there doing the same thing.
