There is some good advice in this thread. In the end, just start writing good content which it sounds like you've already started having 20 Google docs. Your post gave me motivation to finish a post I had started on this topic and I hope it provides some value to you.
I do disagree with the above comments regarding /blog/ having an impact on ranking, click-depth matters more than URL structure.
Also, the guy who said it doesnt matter you need to do direct marketing, he's not wrong but it all plays into the SEO performance of your content. Write good content, promote it and you'll see the benefits. Write and do nothing and you may or may not find some success.
Hope that helps, let me know if you have any questions.
I covered this and the sub-folder vs sub-domain, https://searchmentors.io/company-blogging/ on the post.
Also, the guy who said it doesnt matter you need to do direct marketing, he's not wrong but it all plays into the SEO performance of your content. Write good content, promote it and you'll see the benefits. Write and do nothing and you may or may not find some success.
Hope that helps, let me know if you have any questions.