Social login and front-end posting

Hello,

First off, I have browsed the forums and haven’t (in my few hours of searching) found exactly what I’m looking for.

I need a plugin (or a group of plugins) to enable users to register/login to my site using social media (with the option for standard email registration and login as well)

Following this, they should be able to submit posts (word-press style, with formatting, featured images and everything), which will then be sent to the admin for moderation.

The plugin should be as minimal as possible. I do not want the entire package of profile page, chats, forum and what not.

I have tried Users Ultra (which, while a good plugin, seemed to have too much on offer, and too little control, at least initially), and Ultimate Member (good plugin, but can’t seem to find a ‘submit post’ option for the members, plus no social media login).

Also, while my test site uses Twenty-Fourteen, I’m planning on using the Divi theme. Any suggestions?

Thanks!