I don't think I have been able to capture all of my oldest stays, but of those I could track my #1 brand is Hilton where I counted 74 different properties that I stayed at, followed by Hilton Garden Inn with 20.

Hilton also happens to be my most common brand of all regardless of hotel chain, far ahead of Sheraton, Fairmont, Hyatt Regency, and Marriott which round out my top 5.