Thanks for the report, and sorry about that. I tracked it down: a change I shipped in 14.5.1 to fix the river cache keys accidentally stopped including your top-level (unfoldered) feeds in All Site Stories, so the river was only pulling from feeds inside folders. With most of your folder-organized feeds being Newsletters, the two views ended up looking the same. Fix is in, going out as 14.5.2. Should be in the App Store within a day or two.