we're looking for an collaborative way to share RSS Feeds in a team. Nextcloud News is nice, but it doesn´t have the possibility to share lists with others. Do you know any FOSS solution for it? What are you using and why?
If you have a collaborative inbox (or can direct email messages into your messaging application or similar) you can use an RSS-to-Email service to bring in the feeds then collaborate in the inbox or chat room.
I've done this past for things like software updates both informationaly into a chat room and directly into a bug tracker for vulnerability announcements (the team would then assign and work on the task as usual).