Gerloff's upline Diamond
From the Amway Amagrams: Pat & Liz Shay are a sponsoring DD of Lloyd and Betty Carder (see the DD recognition of the Carders, Amagram Vol. 10, issue 3). The Carders are a sponsoring DDs of Harold and Freeda Murray of Florida (Amagram, Vol. 11, issue 2). The Murrays are a sponsoring DDs of Don and Margaret Gerloff (Amagram, Vol. 13, issue 3). So, unless a LOS change took in the past (which I do not assume), the upline Diamond is Shay.