Does MacOS Sonoma Spotlight still index non-Apple App Content if indexed?

I've recently upgraded to MacOS Sonoma. Spotlight seems to search third-party app names (search for Outlook and you'll find the Outlook app in search results) but it does not seem to surface third-party app content. Is this expected behavior, a widespread bug, or just my issue?

For example, Outlook emails, WhatsApp calls, Evernote notes, Venmo contacts, Booking.com stays, Kayak.com trips...used to all be indexed under their respective apps

I'm considering indexing my app but first wondering if Sonoma even supports it anymore?

Example of App content::

Does MacOS Sonoma Spotlight still index non-Apple App Content if indexed?
 
 
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