The one on the right is a PH 2.0mm connector.
You would need to buy the connector part and the crimp pin headers.
The crimp pin headers attach to the wire and then a crimping tool is used to squeeze the wire and the crimp pin header together. After that you can easily insert the crimped wire into the connector.
Amazon and others might have pre-crimped wires. That is where at one end of three wires the PH 2.0mm connector is already attached and at the other end are bare wires.
The Noctua kit (PWM) also contains 4x clear plastic connectors. These could be used in place of crimping if you have a PH 2.0mm connector already attached to wires. There are instructions that come with the Noctua on how to do this.
The last option, I think, would be to solder the Noctua fan wires to the bare end of 3 wires already attached to a PH 2.0mm connector.
From what I have read on the Radxa forms the Noctua 5v needs to be the PWM model.