Even with the same thing, the way it looks is often different depending on how the light is applied to it.
I think sectarian differences are close to that. I'm a monk of the Soto sect. I understand the Soto sect to some extent, but I can't say that I understand all of the other denominations. Therefore, please excuse the fact that this would be a rough explanation.
The Soto sect values ascetic practices at monasteries (ascetic dojos). I wake up in the morning, wash my face, perform zazen meditation, perform morning duties at the main hall, recite sutras according to manners, eat meals using a special tableware called a responder, perform cleaning work, listen to lectures on Zen and Buddhism, serve a memorial service at the main hall, have lunch, do afternoon work, have dinner (called medicinal stone), do evening zazen, and when I finish, I go to bed. There are two positions when it comes to what to practice for.
As ⓵, Shikakumon. It is a position where an ordinary man (an afflicted person) controls his worries, practices repeatedly, and attains enlightenment.
As ②, Honkakumon. I am in a position where I awaken to Buddhism and practice ascetic practices precisely because I am already a Buddha. (There are various explanations around here. There may be objections from others.)
At first, Dogen Zenji worked hard on his training from the standpoint of ①. However, it is said that he studied in Song Dynasty and practiced ascetic practices under the head teacher Jojo Zenji at Tiento-ji Temple, and was in the position of ②. Whether from the standpoint of ① or from the standpoint of ②, it is important to follow the Buddhism that Buddha and people called ancestors have walked, earnestly work hard on ascetic practices, and walk in Buddhism. (There is also a character limit, so the explanation is pretty rough.)
What contrasts with this is the Jodo Shinshu sect, which was founded by Shinran Shonin. The Jodo Shinshu is in the position of “being led and saved by Amida Nyorai.” I practice ascetic practices such as kigyo and nembutsu, etc., but I place more importance on the belief that “I am saved by Amida Nyorai's original power” rather than ascetic practices. and I understand.
The teachings preached by Shakyamuni are the same. Different denominations are not different. However, as I mentioned at the beginning, the appearance and scenery look different depending on how the light is applied. Similarly, sectarian teachings also seem quite different depending on how the light is applied (how emphasis is placed). Expressions in language are also different. I hope you understand it that way.