How hard is it to get Chase business cards?

A family member has a legit business for which he applied for the Ink Business Preferred and they asked for some paperwork before issuing the card. Thinking of applying for another business card but for myself, and wonder if they are harder than Citi/Barclay with issuing business cards. Was instantly approved for both the Citi AA and Barclay AA business cards without any extra paperwork proving that I have a real business up and running.