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How are these "dynamic" pages being created? You must have a custom page/post type in your WordPress theme? If so, you should in theory be able to check that off under XML Sitemaps in Yoast to add to the XML sitemaps. I wouldn't base this decision on the idea of "fresh content". I'd make those pages what suites them best, and what's the easiest for you to maintain. In other words, it doesn't matter HOW the pages are created, Google just sees that there is a page, and it will crawl and index it. The only thing I'd say, is when you are creating pages dynamically, you want to make sure you're not ending up with too many thin/similar pieces of content. They all really need to add some sort of value.

Thank you all for your response.

Thanks Irving. Could you elaborate a bit on Load More being SEO friendly? Is there a way of doing it that is potentially damaging? Also, if this is done, there wouldnt be a need to have paginated content, thus making the whole noindex part irrelevant, right?