I'd try twitch replays if there's nothing on youtube, valves own for TI/Majors whatnot or of production companies that hosted specific events, perhaps some streamers as well.
I'd also expect people like Purge to have decent content in the decision making commentary (not sure how recent?) and maayyybe Day9 from before he got discouraged to stay in Dota, though I think again most help he had in decision making info may have come from Purge.