Neither of these gets breakfast by way of status, today... but Diamond Elite will have the choice of free breakfast at full-service brands for themselves and 1 registered guest, once the benefits commence in 'early June 2022'. I'm presuming Exsilver had paid for IC Club access, and can then choose between a lounge or restaurant b'fast at this property. I'd always choose Ash & Elm over the lounge, for b'fast at IC Singapore!