There is some piano music, of which the melody is consisted of short, equal duration notes and the accompaniment is also equal duration notes from chord breakdown. There are quite some repetition in the texture and chord progression, but there is not much variation in the rhythm, nor is there much use of heavy chords. As a result, the music sounds fluid and intangible.
Some of the examples include: music from the movie The Hours composed by Philip Glass and music from the movie Effroyables Jardins by composer Zbigniew Preisner.
My question is: in professional musicians' eyes, is music with these properties considered the same style, or style categorization is based on some other properties? If it is, what is the name of this style?
(I don't know if this question is considered to be off-topic genre identification question, but I give it a shot anyway because I can't think of another way to effectively get an answer. If it is off-topic, I'll close or delete it. Thanks for you time and sorry for the missing/inaccurate terminologies due to my still-improving English.)