Arduino nano 33 ble vs ble sense. Power consumption, etc
The official page for the Nano 33 BLE Sense mentions various things including the datasheet for the light sensor. That appears to be much more sophisticated than an LDR.
According to the sensor documentation (above):

Upon  power-up,  POR,  the  device  initializes  and  immedi-ately enters the low power SLEEP state. In this operational state  the  internal  oscillator  and  other  circuitry  are  not  active,  resulting  in  ultra-low  power  consumption.

You would have to read the documentation for the other devices to check these things. Personally I haven't used one, and Arduino claim it &quot;is a completely new board&quot;. So, you may not find a lot of people that can answer those questions.
Keeping power consumption low is quite a complex field. You need to look at clock speeds, sleep states, peripheral power consumption and so on.