ATRF2014 - ESRI:115876

WKT

VERTCS["ATRF2014", 
	DATUM["Australian_Terrestrial_Reference_Frame_2014", 
		SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["ATRF2014", 
	DYNAMIC[
		FRAMEEPOCH[2020.0]], 
	DATUM["Australian_Terrestrial_Reference_Frame_2014", 
		ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115876"]]

Data from @esri/proj-codes

{
  "wkid": 115876,
  "latestWkid": 115876,
  "macro": "PE_VCS_ATRF2014",
  "name": "ATRF2014",
  "wkt": "VERTCS[\"ATRF2014\",DATUM[\"Australian_Terrestrial_Reference_Frame_2014\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"ATRF2014\",DYNAMIC[FRAMEEPOCH[2020.0]],DATUM[\"Australian_Terrestrial_Reference_Frame_2014\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115876\"]]",
  "description": "ATRF2014",
  "authority": "Esri",
  "version": "13.0.0",
  "deprecated": "no",
  "areaname": "Australia - GDA",
  "extent": {
    "slat": -60.55,
    "nlat": -8.47,
    "llon": 93.41,
    "rlon": 173.34
  }
}