@Tadano@Dullahan kek, I just realized, that one of the first things I should have come across, was a simple spreadsheet for calculating transformers, with dropdowns for the materials, and shapes.
I know it has to exist... now it is just a matter of finding it.
Honestly, it feels like an electronics education should start with inheriting many different kinds of such spread sheets xD
Or at the very least, a collection of graphs and tables.