These are top and recommended blog extension for Magento 1 & 2.

1) Blog extension by Landofcoder

Start your blog in 1 minute
Fully Responsive & Mobile Optimized
Multiple stunning layouts & post styles
Live Editor: Change font size, background color, border color, layout, etc
Live Preview & schedule post with ease
Display images or video ( Youtube/Vimeo) in blog with ease

Link: https://landofcoder.com/magento-2-blog-extension.html

2) Blog extension by Mageplaza

Responsive design
SEO friendly
Multiselect categories
Related posts in the product page
Blog Topics
Comment: Facebook Comment, Disqus Comment.
Integrate Magento Sitemap or Blog sitemap

Link: https://www.mageplaza.com/magento-2-blog-extension/

3) Blog extension by FMEEXTENSIONS

Setup your Magento blog at a glance
Compose and format posts in real time with WYSIWYG editor
Publish a post or schedule it for a later date and time
Create categories and subcategories to better showcase articles
Build image gallery to your website and add images to posts
Configure an alluring camera slider for images
Add/Embed videos from YouTube

Link: https://www.fmeextensions.com/seo-friendly-blog-articles-magento-2.html