Many Oloid designs have a flaw that the surface is bend inward due to a simplification in the design process. To get closer to the perfect Oloid I design a version with multiple support constraints inspired by the Oloid structure graphics on Wikipedia (https://en.wikipedia.org/wiki/Oloid).
To illustrate the difference I attached the zebra analysis of a simple design and the more precise one.
I also share the Fusion 360 design which can be handy if you would like to use this model for CNC milling.