Monetisation & Revenue
Patreon
Also called: patreon page
Creators set tiers, publish members-only posts, videos or files behind them, and Patreon handles billing while taking a percentage plus payment fees. Fans can join with no YouTube eligibility involved, which makes it available long before channel memberships unlock.
Against memberships on YouTube the trade is control against convenience. You keep the email addresses and your supporters follow you off the platform, but nobody stumbles into a Patreon tier from a watch page, so every signup comes from you asking. The ones that hold up treat the perks as one deliverable with a deadline instead of a promise of endless extras.