The ice on Antarctic and Greenland (and mountain ranges) raise the sea level around them, because their mass "adds" gravity.
The Antarctic ice is about 2.5 miles thick, and it is pressing the land under it down almost half a mile.
The earth is an oblate spheroid because of its rotation - and the "additional" gravity of the Antarctic ice is raising the sea level south of the equator by about 9,000 feet.
https://www.npr.org/templates/story/...toryId=9428163
So, Mt Chimborazo is closer to space than Mt Everest. Elevation above sea level is an arbitrary measurement, and fairly random; being based on location, rather than actual height above the center of the earth.
The proportion of sea level rise from warmer water being less dense means than spreading the mass of the water over a larger area - would tend to have the sea floor rise a tiny amount.
The proportion (that is increasing) of sea level rise from additional water from melting land ice, is increasing the mass of the ocean, and this will press the sea floor down somewhat. As the land ice melts, the land under it will rise up.
The land in the upper midwest of the US is still rising up after the ice cap melted.
All of this will have an unsettling effect on plate tectonics.