Ponta Delgada height - EPSG:6187

WKT

VERTCS["Ponta_Delgada_height", 
	VDATUM["Ponta_Delgada"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["Ponta_Delgada_height", 
	VDATUM["Ponta_Delgada"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "6187"]]

Data from @esri/proj-codes

{
  "wkid": 6187,
  "latestWkid": 6187,
  "macro": "PE_VCS_PONTA_DELGADA_HT",
  "name": "Ponta_Delgada_height",
  "wkt": "VERTCS[\"Ponta_Delgada_height\",VDATUM[\"Ponta_Delgada\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"Ponta_Delgada_height\",VDATUM[\"Ponta_Delgada\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"6187\"]]",
  "description": "Ponta Delgada height",
  "authority": "EPSG",
  "version": "8.2(10.2.1)",
  "deprecated": "no",
  "areaname": "Portugal - Azores E - S Miguel onshore",
  "extent": {
    "slat": 37.65,
    "nlat": 37.96,
    "llon": -25.92,
    "rlon": -25.08
  }
}