I currently have the main content blog on my website set for endless scrolling instead of breaking up the pages into 1,2,3,4,5 etc with a certain number of posts per page. When it comes to SEO is one of these ways better than the other?
Endless scrolling or one-page website was in trend some years back. But these websites ain't SEO-friendly if you have multiple services to list. If you have to showcase just one service or product then it will look good at first glance but if you have multiple services then it's not that good. As you have said, you are creating a blog page, I must suggest you use pagination to make it more user-friendly instead of making it one page that has no ending point.
The best for SEO is to make your site as simple, as possible, using only old technology, without any complicated features. Thus, the explicit pages are better, than the fashion with the endless scrolling.
I also have an endless scrolling website and if you read Google's docs you will find that Google crawler only crawl anchor tags with href value. And Google have said it, with endless scrolling Google will only index some and not all of your content. If you are using AJAX to fetch the new content on your page make sure to use JavaScript history API. Read this guide: https://developers.google.com/search/docs/crawling-indexing/links-crawlable And here is the history API docs you need to get started: https://developer.mozilla.org/en-US/docs/Web/API/History_API