I'm not sure where you got those. IPCC 2019 report estimated the Greenland contributions in the 10-30cm range, and the link you gave is mostly about newer mode

I'm not sure where you got those. IPCC 2019 report estimated the Greenland contributions in the 10-30cm range, and the link you gave is mostly about newer models suggesting a bit higher than 2019 IPCC, so suggest at the higher end (or above) of that range. The only related thing I could find in your linked report was to estimate contributions up by 2.6cm/2.8 cm/5cm (different scenarios) from CMIP5 to CMIP6, not in total. Maybe I missed something?