Some notes I've gathered from the WWDC session (also here's a useful blog post summary).

1. We should assign interruption levels for each type of notifications. These are passive, active (default / pre-iOS 15 style), time sensitive, and critical. Passive shows in the notification list, but does not light up the screen or play a sound. Time sensitive has the ability to break through the user's notification summary and focus mode settings (if allowed by the user). Critical is for emergencies like weather alerts. For example, I think the login notifications could qualify as time sensitive, and the edit and translation milestone notices could quality as passive, but PM or Design should ultimately decide on these.
2. We should assign a relevanceScore to notifications. This is a number between 0 and 1 and it helps the system determine what should be displayed in the notification summary. The highest score gets featured in the notification summary.
3. Notifications with media attachments are more likely to be featured in the notification summary. My only thought is if we know of a particular article associated with a notification (article talk page notification, edit revert, page link, mention), maybe we could pull the article lead image for display here.
4. Notification actions can now show an associated icon, can be from SFSymbols or something custom, so we could modify the design accordingly. We also might need to provide a new resolution for the app icon because notifications now display the app icon at a larger size.
5. We can signal to Siri which notifications are messages and who those contacts are, so that Siri can begin to surface them elsewhere in the system as a shortcut and suggestions. This could be useful for talk pages and mention notifications, but this also feels like a version 2 feature IMO.

Lets definitely do 1 and 2 under this ticket (I'm re-titling it to reflect that). We can use our master spreadsheet of notification types to set the interruption level and relevance score for the existing ones, and then we can assign a low score for any future "unrecognized" notification types.

For 3 and 4 I think we're covering this elsewhere in the main design ticket. So while its something to be mindful of, there's no work needed for it on this task.

Agreed that 5 seems like a future feature, esp given that most editor user names are not "real name" and less likely to match things than something like Facebook or LinkedIn.

Related but different ticket: https://phabricator.wikimedia.org/T291019

@JMinor @cmadeo I may be missing this somewhere, but is the interruption level on a spreadsheet somewhere? I'm looking at this sheet - I see a column for it but no values.

PR up at: https://github.com/wikimedia/wikipedia-ios/pull/4189

Looks good on 6.9.0 (1921)