Spec wise - all raspberries require 5v 2A input.
My project needs multiple remote rpi’s to send periodical status of GPIO using python script ( runs on Raspbian Strech Lite ).
Is a 2A a must ?
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Don't know if this will help but I found this post which outlines that the RPi is only really drawing 1.2A. They also mention that he was able to get his RPi to draw 0.5A.
Here is a power consumption chart which compares the different RPi. From the chart it claims the RPi ZeroW consumes about 250 mA for watching short High-def videos.
Someone also looked at the Amps used and posted a video. He showed that it reached around a similar mA as the link above.
A remote Pi often has power constraints. This answer assumes that you need the requested information for designing a way to power your remote Pi.
I prefer to use an ammeter instead of specs to determine actual current requirements. Although a multimeter can work, you may find an inline meter helpful. This can help you determine your actual current and power usage instead of having to deduce that from specs.
For example, my remote Pi's have multiple sensors and actuators hooked up to GPIO. I choose to power each Pi directly via GPIO 5V and measure the current and power usage with a inline digital meter This particular meter would only work if you power your Pi from 12V via DC-to-DC converter like I do. The linked meter won't measure a 5V source but it should be easy to find equivalents. Knowing the exact power requirements of my remote Pi has helped me plan out battery needs, etc.