Setting up a site which creates snippet posts based on other blogs

Hi, I would like to set up a blog which basically takes the newest posts from specific other blogs (after they agree they are interested in joining), places a snippet of that post including a picture from the article (and preferably a logo of the blog) and once someone clicks on the snippet routes them to the site that original post comes from. I want it to be a hub for readers who are looking for the latest posts on a specific subject. Kind of like what bloglovin/pinterest does, but here I want to set the sites for my readers.

I’ve been searching for a while now and have come across a couple of suggestions:
1. Use an RSS reader type plugin, which basically reposts whatever is in the RSS feed. This usually means no pictures
2. Implement a frontend for other bloggers to add content. Downside of this is that it’s a lot of manual work for each blogger to get their content on the blog I’m setting up and they have to keep doing this. Would like to have this happen automatically, so they only have to sign up once and everything they post will get mentioned on my site.
3. Use PuSH (plugin like PushPress). Have tried reading up on this a bit, but I lack the knowledge to understand how this works and how I might be able to use it to set up what I have in mind.

These are options I will explore, but I’m interested to know if you know any better way to realise what I currently have in mind. Any help on this would be very much appreciated.