Makes sense. From your earlier post it sounded like there were only two levels needed: "deal with right now" and "deal with at end of day," in which case "silence" works as a poor-man's snooze for me because I don't pick up my phone and deal with them unless it vibrates or I'm at home going through the backlog. But now that you're talking about four different priority tiers, having them be device-specific sounds like a good plan. Best I can do without a separate tier from smartwatch/KDE Connect/ChromeOS is notify, snooze, and silent - 3 tiers. Pretty sure there are a few apps offering custom ringtones or vibration patterns per app or per notification keyword for further granularity on the phone itself, but for those who already wear a smartwatch (like me) having the separate device do that heavy lifting is a great way to go.