I don’t know much of anything about SEO… The only thing I can say about SEO on WordPress is ‘Yoast‘ and a reminder that ‘Content is King’! Seems most of the people asking SEO questions don’t know diddly about either of those.
When pressed further I’ll usually mention running the Broken Link Checker and the Trash Duplicates and 301 Redirect Generator. Trash Duplicates is kind of cool for its really handy 301 redirect generator. Duplicate Posts are not really cool… especially if there are comments enabled… you’ll wind up with dual comment threads if you have duplicate posts.
Do run the Trach Duplicates plugin and do let it fix your 301 redirects as it deletes those duplicates.
So, if you agree that ‘Content is King’ on a WordPress based (or any) web site, then getting that content exposed to the public would be the bailiwick of your RSS/Atom feeds and the sitemaps. WordPress has built-in support for RSS and Atom feeds or Syndication.
Yoast SEO has a very well behaved Sitemap generator.
Sitemaps are for the robots among us, those robotic search engines and web crawlers consume sitemaps and return links. But there a secondary Sitemap you should consider. Most people put a good bit of work into their main menu… they should! But I like to run a very intensive textual menu in my footers with an HTML sitemap embedded in it.
This is the plugin I’ve used most recently https://wordpress.org/plugins/wp-sitemap-page/ as it has a shortcode that can be embedded in the site’s footer. That’s where I like the HTML sitemap… right there where it’s useful for the reader seeking more info after devouring a page or post on your site.