<b>Q: Does a cluster have to be all blog posts, or do other content types count toward topical authority?</b>

<b>Q: Does a cluster have to be all blog posts, or do other content types count toward topical authority?</b>

Short answer: other formats absolutely count, and a mix can strengthen coverage. Tools, calculators, glossaries, comparison tables, and well-structured FAQ pages all add to how completely you cover a topic, as long as they're genuinely useful and interlinked.

Engines care about whether you answer the full range of user intents in a topic, some of which are informational (articles), some transactional (comparisons), some utility (a calculator). Covering more intent types makes the cluster feel complete.

In practice:
— A glossary of your topic's key terms is a strong entity-coverage play and a natural internal-linking hub.
— Interactive tools earn links and dwell time that pure articles rarely do.
— Whatever the format, treat it as a cluster member: link it from the pillar, link it to siblings, give it a clear single intent.

Wondering which format fills your gap? Send it in.