It is certainly possible to have a dropdown selection result in the population of other dropdowns, generate the texts for different table cells, and so on. The
https://www.msofficeforums.com/word-...own-lists.html thread already discusses the latter.
For Dependent Dropdown Content Controls, see:
Help with cascading dropdown list
For Hierarchical Dropdown Content Controls, see:
Creating a reducing drop down list
Getting all this to work the way you want in the one document can be a challenge - especially if you don't have a coding background.