WGS 1984 (G2139) - EPSG:9755

WKT

GEOGCS["WGS_1984_(G2139)", 
	DATUM["WGS_1984_(G2139)", 
		SPHEROID["WGS_1984", 6378137.0, 298.257223563]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["WGS_1984_(G2139)", 
	DYNAMIC[
		FRAMEEPOCH[2016.5], 
		MODEL["ITRF2014-PMM"]], 
	DATUM["WGS_1984_(G2139)", 
		ELLIPSOID["WGS_1984", 6378137.0, 298.257223563]], 
	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", "9755"]]

Data from @esri/proj-codes

{
  "wkid": 9755,
  "latestWkid": 9755,
  "macro": "PE_GCS_WGS_1984_G2139",
  "name": "WGS_1984_(G2139)",
  "wkt": "GEOGCS[\"WGS_1984_(G2139)\",DATUM[\"WGS_1984_(G2139)\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"WGS_1984_(G2139)\",DYNAMIC[FRAMEEPOCH[2016.5],MODEL[\"ITRF2014-PMM\"]],DATUM[\"WGS_1984_(G2139)\",ELLIPSOID[\"WGS_1984\",6378137.0,298.257223563]],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\",\"9755\"]]",
  "description": "WGS 1984 (G2139)",
  "authority": "EPSG",
  "version": "10.036(13.1.0)",
  "deprecated": "no",
  "areaname": "World",
  "extent": {
    "slat": -90,
    "nlat": 90,
    "llon": -180,
    "rlon": 180
  },
  "frameEpoch": 2016.5,
  "deformationModel": "ITRF2014-PMM"
}