Three layers, reported monthly against last month and last year: outcomes (leads/calls attributed to organic. The point of the exercise), visibility (Search Console impressions and clicks for non-brand queries), and the leading indicators (pages indexed, terms where you've entered the top 20).
Watch trends over quarters, not weeks. Organic data is noisy, seasonal, and slow by nature. A useful discipline: annotate your tracking with what shipped when (new pages, redesign, citation cleanup) so movement gets honest attribution.
Ignore: vanity rank-tracking for terms nobody searches, 'domain authority' as a goal (it's a third-party estimate, not a Google number), and any report that can't connect the work to a query to a customer.