What two to three streaming services offer the best originals and library depth?

[Addison91]

I'm reevaluating my streaming subscriptions as the costs keep climbing, and I'm trying to decide which services are actually worth keeping for their original content and library depth versus rotating them monthly. I primarily watch documentaries, prestige dramas, and international series, and I'm not interested in sports or live TV. For others with similar viewing habits, which two or three streaming services do you find provide the best consistent value and quality in their original programming, and how do you manage subscription fatigue without missing the must-watch shows?