Schools that reject meditation entirely are excluded, for obvious reasons.
Samatha/Vipassana, Calm/Insight, Stopping/Seeing are ubiquitous in all Sri Lankan, Indian, Tibetan, Chinese, Korean, Vietnamese, and Japanese Buddhism. Yet it becomes disfavored in the later dispensations of Pure Land Buddhism, even though the foundational teachers of Tien Tai cite it:
(Paul Swanson) "I recall that many years ago, at a time of youthful indiscretion, having a naïve and simplistic impression of the Mo-ho chih-kuan, a text which, from its title, implies that it is mainly about the meditational practice of “cessation and contemplation” (止 観, śamatha-vipaśyanā)."
Why then is it later dropped?
And why do most Buddhist teachers not know that everyone is doing it? So often it is insinuated that each school of practice has exclusivity, when it is literally inclusive to the extreme.