Trend research
The ranking starts from 10,453 public Shorts plus 88 X posts. Training uses views per day, and channel size is held as a control. Small pre-ranked topic pages are not a reason to pick a niche. Live-action, talking-head, sports, compilation, and gameplay rows stay in the table and are not templates. No video file is stored. A scheduled refresh spends at most six search.list calls, then playlist pages and videos.list batches of 50.