In general, the real org chart has nothing to do with the official hierarchy. The real org chart is the people you care about, who can influence your product.
I like this amusing chart.
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Ask yourself: how much power do your stakeholders have in the organization to make or influence a decision? How interested are they in what you’re doing? What do you think? Tell me a story.
Source: Extant Structure by Mark Walsh from Integration Training (integrationtraining.co.uk)