The most recent of those looks like this
Samsung Galaxy S9 (SM-G960F) - BTB - G960FXXUHFVG4 firmware
Country United Kingdom BTB
Model SM-G960F
Product Code BTB
Security Patch 2022-03-01
OS Version Android 10
PDA G960FXXUHFVG4
CSC G960FOBEHFVA1
Build Date 2022-07-21
Changelist 23733677
BTB signifies BT carrier, you should continue to search for BTU (unbranded), or choose as
General CSC: CSC or HOME CSC? Which CSC File to Flash in Odin?
Specific code list: 500+ Samsung CSC Codes - Complete List (2024) - Technastic
Looks like you might have to pay from that source?