Thank you so much to Larry, I have moved forward quite a few steps.
Each node type is a type of entity. A category/taxonomy helps to classify the same sort of entity.
Understood. So, I created a Vocabulary: About (for now), which contains terms like Schedule and Discography, and tried to create a View to list only the titles of the nodes with terms as header but to no avail. Since both Schedule and Discography are Views, I thought I do: Page > List/Table View Field > Node Title Filter > Terms for About
I get nothing but Empty Text I created. Appreciate any help.