Echo all usernames of users in a collection with query lang

Hi there,

I know there was a trick for this :thinking: but I cannot find it.

How to echo all usernames of users in a collection using query lang, hopefully separated with commas, like:

User first, Second user, A third user, More and etcétera

For a single page I use, of course:

{{ page.author.toUser.username }}

Thank you

maybe collection->pluck can help here