Does anybody know what the component number of these TP406, TP407, TP408 and TP409 are? I want to use these for my PCB but there's no information in the BOM for them.
These TP are only exposed pads on the boards. This is because it is only used as probe point for measuring the voltage levels. These voltage rails have no need to be provided externally and is fixed, that's why the probe point for this only occupies as minimal board space as possible. The pads and holes are big enough so that the needle tip of your DMM can fit.
In your case, what do you intend to use this for?
This is essentially thruhole unfilled vias. the silkscreen shows it as a test point. they are spaced 100mils apart so that a standard 100mil 2-pin header can be soldered on to these test points and connected to an oscilloscope to see the quality of the power supply.