Source candidates from GitHub and speaker circuits

Find [12] candidates for [role] without using LinkedIn search — the people everyone else is missing. Look where the work is: GitHub contributors to [relevant repos, topics, or language ecosystems], speakers at recent [field] conferences and meetups (talk pages and YouTube channels list them), authors of solid technical blog posts on [topic], and active answerers in relevant communities. For each person: name, what they go by online, current company if discoverable, links to the evidence — repos, talks, posts — and two sentences on why their actual work fits the role. Skip anyone whose only signal is activity from years ago. Write the results to a new Google Sheet and give me the count plus which channel produced the best people. Public information only — no digging for contact details.