The paper I linked also looks at other
proxy sea level estimates on page 4.
Not exact matches
The same holds for the specific global mean EIV temperature reconstruction used in the present study as shown in the graph below (interestingly, eliminating the
proxies in question actually makes the reconstruction overall slightly cooler prior to AD 1000, which — as noted in the article — would actually bring the semi-empirical
sea level estimate into closer agreement with the
sea level reconstruction prior to AD 1000).
The
sea level proxy is currently more reliable than
estimates based on summation of directly measured radiative fluxes and it also extends much further back than satellite measurements.
Sea level measurements, either from satellites, tide gauges, or geological
proxies, don't rely on global TOA flux balance
estimates.