There are even professional studies out there on what types of posts (image, link, video, text) have a higher average reach percentage. (blog.reedsy.com)
This is why I don't commit to a particular type of post on a daily basis (my sister keeps telling me I should). (thelunchtray.com)
Test different types of posts at different times of day to see which gets the best response. (vetnetwork.com)