Thanks for taking the time to source the names Brett MH.Here are...

Thanks for taking the time to source the names Brett MH.
Here are a few more I have added in red to your list.

1. Utilities - Power & Water

NextEra / FPL / Gulf Power
Eversource
Entergy
Pacific Gas & Electric
Duke Power
Dominion Energy
Vulcan Line Tools
Western Power
South Australia Power Networks
BHI Energy / Westinghouse Electric Co
Enel Colombia
Major Australian Water Utility (not sure who??)
Southern California Edison
San Diego Gas & Electric
SoCal Edison
Seattle City Light American Transmission Company
Western Power
SA Power Networks

2. Mining, Oil & Gas (lots of digital twins being built in this sector)

Rio Tinto
Newcrest
Anglo American
Chevron
Yancoal
Oil Search
Legeneering Partnership
Gridvision

3. Survey & Mapping (lower value clients but lots of them, they can now load their date quickly onto the 3DP cloud platform)

Land Surveys
BARR Geospatial
Precision Hawk
RM Surveys
Monteath & Powy's
SMG
CMS Surveyors
Carbonix Partnership
Emesent Parnership
Saemspatial
Aerometrex
Decipher - Wesfarmers

4. AECO

Velociti / Amazon
Future Generation
Jacobs
Prompcorp
Acciona
Empact Engineering
Lendlease (they did a 5G roll out)

5. Transport (Road / Rail / Ports / Airports)

Sydney Trains
Rail Projects Victoria
Transport for NSW
Currently engaged with several post & airport operators in Aust & the USA
Main Roads WA
Port of Seattle
Dallas Fortworth - Airport

6. Defence / Defence Contractors / Intelligence

???? (ADF & US DOD)

7. Other
City of Newcastle
Major League Baseball (Not sure if this continued)
Aerial Filmworks

8. Partnerships/Integrations
Bentley Systems
Autodesk - BIM 360
HERE Technologies
Esri
Pointfuse
Nearmap
Tom Tom
Advance Mobility Analytics Group (AMAG)
FibreSense
HyperOne
Accenture's Global Energy Consulting Team