Just a data point. Not much different from others' experience, but I found this thread really helpful so just trying to tack on some additional information for what it's worth.
2 Chase business cards and 6 personal cards. 3/24. One of the business cards is a business preferred in the name of an actual sole proprietorship business with an EIN. Card was issued in the name of the business using the EIN for the application. (I think this was before the requirements changed for using only actual person name for name of business for chase business apps for sole proprietorship.) Bonus received on prior preferred card in February 2017. Applied this week for a second preferred card. Used SSN and actual name. Reduced credit limits on a personal card and a business card. Got pending message and telephone status line gave 30 day message. Approved today automatically -- so 3 days. No verification or call required. We actually have a good story to tell about why we need a second card for a second business but didn't need to give it.