Any content that is informational, valuable, and relevant to your website/business or industry irrespective of its format is the ideal content for your website. There is no specified definition of ideal content. As long as it is helpful, it is ideal. It could be:
✔ Articles
✔ Blog posts
✔ Website copy
✔ Infographics
✔ Videos
✔ SEO content
✔ Case studies
✔ Website content
✔ eBooks
✔ Social media content
✔ Email newsletters
✔ Memes
✔ Images
✔ Quiz
✔ Product descriptions