@amigoponic, you will find consistency within all the teachings especially regarding the Pali Canon of the Theravada, Tibetan's, and the Chinese text from the original teachings of the Buddha recalled by his assistant Ananda. All schools follow the 4 Noble Truths, Eightfold Path, Dependent Origination and many other instructions. The main arguments were over rules of the monastic community, classification of mind states, relative and absolute reality, what is empty and what is inherent regarding our true nature in the Abhidhamma doctrine, which is like an excel file regarding mind and matter...hahaha

Buddhism walks the middle way between what we label eternal and nihilism. The path a Buddhist walks is paved with virtue, wisdom, sympathetic joy, compassion, loving-kindness, right action, right view, right effort and so on. We often mistake labels for what is real, and I think this is what a lot of the teachings are for ripping the labels and old habits off our eyes so we can see reality as it is and make the correct choice regarding how we should or should not take action. Of course, there is karma, each of our actions is like a seed that we plant that will sprout in the future. The aim is to stop sowing the seeds of karma and walk away free.