RGF 1993 - ESRI:115778

WKT

VERTCS["RGF_1993", 
	DATUM["D_RGF_1993", 
		SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["RGF_1993", 
	DATUM["D_RGF_1993", 
		ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115778"]]

Data from @esri/proj-codes

{
  "wkid": 115778,
  "latestWkid": 115778,
  "macro": "PE_VCS_RGF_1993",
  "name": "RGF_1993",
  "wkt": "VERTCS[\"RGF_1993\",DATUM[\"D_RGF_1993\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"RGF_1993\",DATUM[\"D_RGF_1993\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115778\"]]",
  "description": "RGF 1993",
  "authority": "Esri",
  "version": "10.4.0",
  "deprecated": "no",
  "areaname": "France",
  "extent": {
    "slat": 41.15,
    "nlat": 51.56,
    "llon": -9.86,
    "rlon": 10.38
  }
}