Grand Cayman 1959 - EPSG:4723

WKT

GEOGCS["GCS_Grand_Cayman_1959", 
	DATUM["D_Grand_Cayman_1959", 
		SPHEROID["Clarke_1866", 6378206.4, 294.9786982]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_Grand_Cayman_1959", 
	DATUM["D_Grand_Cayman_1959", 
		ELLIPSOID["Clarke_1866", 6378206.4, 294.9786982]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "4723"]]

Data from @esri/proj-codes

{
  "wkid": 4723,
  "latestWkid": 4723,
  "macro": "PE_GCS_GRAND_CAYMAN_1959",
  "name": "GCS_Grand_Cayman_1959",
  "wkt": "GEOGCS[\"GCS_Grand_Cayman_1959\",DATUM[\"D_Grand_Cayman_1959\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Grand_Cayman_1959\",DATUM[\"D_Grand_Cayman_1959\",ELLIPSOID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"4723\"]]",
  "description": "Grand Cayman 1959",
  "authority": "EPSG",
  "version": "8.1.2(9.2.0)",
  "deprecated": "no",
  "areaname": "Cayman Islands - Grand Cayman",
  "extent": {
    "slat": 19.21,
    "nlat": 19.41,
    "llon": -81.46,
    "rlon": -81.04
  }
}