>>216111832
Exactly, the list just helps you know about the abstraction layer and vowel sounds belonging to the suffixes under each category.
The way of thinking needed to conjugate these verbs is way too different compared to that of western languages.
Learning a new european language verb conjugation just requires to put a grid of pronouns vs time most of the time so a native speaker of another european language can easily grasp the concepts and just memorize and understand new forms or conditions such as number case or gender for already familiar pronouns/times.
But this is not the case for Japanese. Their conjugation grids point out a different idea on another level of abstraction where pronouns, persons or people are left out because that depends on particles, context, nouns and other auxiliary verbs.
This is why you see most Japanese learners from european language speaking countries making the mistake of forcing pronouns in their sentences when Japanese language doesn't need it to work.

Few people actually want to think using the target language structure and opt to just machine translate everything in their brain and speak using their native language grammatical structure with minor changes. While this might work out with languages sharing a common ancestor like those derivated from latin his is a big issue when the target language is not part of the same family (Japanese).