KSA-GRF17 + KSA-VRF14 height - EPSG:9520

WKT

HVCOORDSYS["KSA-GRF17_and_KSA-VRF14_height", 
	GEOGCS["KSA-GRF17", 
		DATUM["Kingdom_of_Saudi_Arabia_Geodetic_Reference_Frame_2017", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	VERTCS["KSA-VRF14_height", 
		VDATUM["Kingdom_of_Saudi_Arabia_Vertical_Reference_Frame_Jeddah_2014"], 
		PARAMETER["Vertical_Shift", 0.0], 
		PARAMETER["Direction", 1.0], 
		UNIT["Meter", 1.0]]]

WKT2

COMPOUNDCRS["KSA-GRF17_and_KSA-VRF14_height", 
	GEOGCRS["KSA-GRF17", 
		DATUM["Kingdom_of_Saudi_Arabia_Geodetic_Reference_Frame_2017", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	VERTCRS["KSA-VRF14_height", 
		VDATUM["Kingdom_of_Saudi_Arabia_Vertical_Reference_Frame_Jeddah_2014"], 
		CS[vertical, 1], 
		AXIS["Gravity-related height (H)", up, 
			LENGTHUNIT["Meter", 1.0]]], 
	ID["EPSG", "9520"]]

Data from @esri/proj-codes

{
  "wkid": 9520,
  "latestWkid": 9520,
  "pcsWkid": 0,
  "gcsWkid": 9333,
  "vcsWkid": 9335,
  "macro": "PE_HVC_KSA_GRF17_KSA_VRF14_HEIGHT",
  "name": "KSA-GRF17_and_KSA-VRF14_height",
  "wkt": "HVCOORDSYS[\"KSA-GRF17_and_KSA-VRF14_height\",GEOGCS[\"KSA-GRF17\",DATUM[\"Kingdom_of_Saudi_Arabia_Geodetic_Reference_Frame_2017\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],VERTCS[\"KSA-VRF14_height\",VDATUM[\"Kingdom_of_Saudi_Arabia_Vertical_Reference_Frame_Jeddah_2014\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]]",
  "wkt2": "COMPOUNDCRS[\"KSA-GRF17_and_KSA-VRF14_height\",GEOGCRS[\"KSA-GRF17\",DATUM[\"Kingdom_of_Saudi_Arabia_Geodetic_Reference_Frame_2017\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],VERTCRS[\"KSA-VRF14_height\",VDATUM[\"Kingdom_of_Saudi_Arabia_Vertical_Reference_Frame_Jeddah_2014\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]]],ID[\"EPSG\",\"9520\"]]",
  "description": "KSA-GRF17 + KSA-VRF14 height",
  "authority": "EPSG",
  "version": "10.013(13.2.0)",
  "deprecated": "no",
  "areaname": "Saudi Arabia - onshore",
  "extent": {
    "slat": 16.37,
    "nlat": 32.16,
    "llon": 34.51,
    "rlon": 55.67
  }
}