We are looking at getting a website and we have product information along with categories, The data supplier have example files in CSV but also have a API which we can use, They can modify the data structure to the structure we need but i am unsure what we need, Looking at Magento 2 but would also consider wordpress also, maybe both. for magento i have seen the amasty import and export which i think we would need, I need someone to be able to check the current structure, and if not correct to provide the correct structure we need and import successfully. It would be, Category > Brand > Category > Products