We are using various types of collections, based on their template. For instance, we have some “brand” collection, which have a specific template suffix.
Unfortunately it seems Algolia does not index template suffix neither on product, collection nor article. I think it would be a useful info to save and make searchable.
I’ve been able to workaround it for now by adding a metafield, but this force our customer to select the alternate template, and not forget to set the metafield as well.