I called (800) 444-7646 and requested the stays match from the agent I spoke with. Agent asked for my various programs and status with each. After mentioning Hilton Honors Gold and World of Hyatt Discoverist, he said that Honors Gold would be the better status match (to GCCI Diamond). Interestingly, he also noted that because I had "VIP status" I wouldn't have to renew the Diamond status and would keep that status for life unless I qualify for Diamond Select. That was quite unexpected, and it will be interesting to see if that rings true over the years.