I am using ArcMap 10.4.1.
I would like to match the datum between AutoCAD and ESRI ArcMap. However, I do not see the datum in the AutoCAD selections, comparing the WKT ESRI information and the AutoCAD options. The coordinate system I am looking for in ArcMap is designated as LL84 in AutoCAD, which is the WGS84 coordinate reference system, but do not see the flattening value matching. Is there a better way I can search for the correct datum/coordinate reference system that will match AutoCAD?