
Three low-presence YouTube operators in sleep narration and engineering documentary show mid-roll inventory systems, but none clears a public, method-matched CPM or RPM doubling receipt.
| Channel | Niche tag | Subscribers | Views Aug 13–25 (SB) | SB daily earnings range | Browse / Suggested / Search | CPM/RPM gate | 90-day weekly cadence |
|---|---|---|---|---|---|---|---|
| Stephen Dalton Sleep Stories | Adult sleep-story voiceover | 319K | ~571K | about $5–$269 | Not public / Not public / Not public | Not cleared | Recent window active; full 90 days not fully proven |
| Michelle’s Sanctuary Stories for Sleep | Adult sleep-story female VO | 117K | ~60K | about $1–$24 | Not public / Not public / Not public | Not cleared | Recent weekly adds; older sample sparse |
| Engineering The Impossible | Engineering / architecture documentary VO | 171K | ~508K | about $3–$265 | Not public / Not public / Not public | Not cleared | Recent adds; Jun–Jul gap in sample |
cozy or legendary premise + sleep or bedtime marker, sometimes with a named character or place. The channel is faceless in the operating sense: the product is narration plus atmosphere, not a camera personality.support.google.com
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