The Read, Unread and See All filters are no longer available. However, you can sort your emails by date, subject or sender if you switch to the Unified Inbox view.
If you’re unsure how to switch to this view, please refer to the following help article: https://help.aol.com/articles/how-do-i-switch-to-the-unified-inbox-view.jotaito commented
Can the "Group" element of the Contacts List be alphabetized? It would certainly eliminate time spent looking for one particular group if they were in alphabetical order.