Usually it's any capacitors that are coupled directly to the output of the power supply, in this case it would be only the capacitors on the Vregs and connector (so ~5uf). The voltage regulators act as an impedance buffer so the supply doesn't really 'see' the capacitance of the rest of the circuit.
One of the factors is inrush current and the other is power supply stability. Sometimes even using an inductor or resistor in-between the supply and