What are instant article approval based websites?

I am going to start SEO off page activities for my own business in my free time and I want to do article submission to create back links for my
service pages so I want to know websites that approve instantly article. please suggest me few websites to start work on it.

Off the top of my head:
vocal.media - manual review but your content will be approved if it's decent
reddit
facebook
medium - if you manage to post it without "noindex" tag
web2 like tumblr and wordpress