This website has all the info you need about OPT timeline information, answering the major question many people have of “When can I expect my EAD card to arrive?”
This graph, for example, show all the cases from every day from the past 5 months. You can see most cases starting in July are still pending, but almost every case into the end of May has been processed.
This graph shows average approval times when applying back in April were incredibly slow, often averaging around 114 days, or 4 months
This graph shows average approval times when applying back in June have been much fast, closer to 88 days, but a large majority are still being processed (Pending)
The biggest takeaway is probably that the time when you apply has one of the largest factors into determining how long it will take to get approved
Thanks to @anish for the info