Much of this depends upon what you are expecting to achieve. You do not say in your question.
For example, are you looking for a job, freelance work, or to market yourself or expertise for other purposes, etc? Are you using the blog for this purpose?
Certainly a profile page on the blog is appropriate and adds credibility within search engines. Profiles ...
fileadmin contains files that can be uploaded, managed and used in the TYPO3 backend, such as images, PDF, videos etc. This can be named differently or even split up into several storages, but fileadmin is the default. So the files in fileadmin are files that can be changed by the editor in the TYPO3 backend. You can name the subdirectories any way you want. ...
The current Child Categories will be moved up to Parent Categories and
thus be on the same level as the newly transferred Static Pages
('Keeping Fit' and 'Healthy Eating'). Would this cause issues with
search engines understanding the layout of the website?
You are basically putting all posts on the same semantic level. How is google going to discern ...
Whether or not you use the "subpage" feature in WordPress should have little impact on SEO. When you use that feature WordPress does two things:
The URL of the subpage starts with the URL of the parent page.
The subpage contains a link to the parent page.
URLs don't really matter for Google SEO right now. Google doesn't put much (if any) weight on ...
You may be overthinking this.
Both of your examples are the same to a search engine in one respect.
Huh? Whatcha talking about Willis?
When we see example.com/category/subcategory/article, we immediately see a directory structure. When a search engine sees this, they see word boundaries.
When we see example.com/category1-article1, we immediately see a ...