To me, you don't need to understand much when it comes to genres when you favour a song. It is after all what the song sounded like and how it made you feel, that hooked you. When you search for more music in that genre, you'll find other stuff there that will sometimes seem out of place or be unexpected. Of course it is valuable to categorize a song under a certain genre for reference, however people don't necessarily agree on that genre so it does not always work. So what we end up doing is classifying a song under multiple genres, as if it is not confusing enough already!
I've been looking at Music Map (https://musicmap.info/) and it is very interesting to read up on the history of the different music styles. You can see how one genre has transformed into another over the world and trough the years.
So after many years I still get confused when I try to slap a genre onto a song that I produced...but it has to be done else it does not belong anywhere.
So, what genres then is the music from Sonic Dreamer Studio? It depends on who you ask.