I recommend a LinkedIn-style notification center with X-like simplicity: one compact stream, clear unread states, and a strong moderation lane for important account messages.
Notification stream
This page is UI-ready. Once backend notifications are added, real items will replace this preview stream.
Moderation
Post hidden by moderation
Preview
We hid a recent post because it requested unsafe sexual content. Warnings and next steps will appear here.
MODERATIONunread
Conversation
New reply on your thread
Preview
When someone replies to your thread, this panel will show the snippet and take you back into the conversation.
THREAD REPLYunread
Social
Someone followed you
Preview
Follows, approvals, and other social updates can live beside moderation warnings without feeling noisy.
FOLLOWread
Why this pattern
Better than pure LinkedIn density because moderation warnings need higher visual priority than routine social events.
Unread state should be subtle but obvious.
Moderation notices should always feel more urgent.
Replies, comments, follows, and system events can share one stream.