Re-ARM+RAMPS+Marlin sensor analog input pins

I'm setting up my 3D printer for 4 nozzle, 4 stepper color print. My setup is Re-ARM+RAMPS 1.5+Marlin 2.0 (debug) in EEB configuration with two additional stepper motors using a motor extender card. T0, T1, T2 (A0-A2) analog inputs as heater temperature sensors work fine. However, none of the other pins labelled as analog input capable work. I've disable the LCD for the pins on that pin cluster.

I set the cold extrusion protection down to 10 deg (default 50) so the motors work at room temperature is the assigned thermistor is working, or a cold extrusion error if the thermistor is not.

What am I missing?

Here is the Re-ARM+RAMPS documentation.
A0 0 // A0 (T0) - (67)
A1 1 // A1 (T1) - (68)
A2 2 // A2 (T2) - (69)
A3 3 // A3 - (63) - J5-3 & AUX-2
A4 4 // A4 - (37) - BUZZER_PIN
A5 5 // A5 - (49) - SD_DETECT_PIN
A6 6 // A6 - ( 0) - RXD0 - J4-4 & AUX-1
A7 7 // A7 - ( 1) - TXD0 - J4-5 & AUX-1

You do know the T0-t2 inputs do not go directly to the analog input pins? There is a small circuit involved

see [reprap.org]

the thermister section.

JP7 is the thermistor plugs and at the bottom is Therm0-2 which is the analog input pin used

Yes, I missed the obvious here. I will add the resistor+capacitor pair as in the attached schematic clipping you referenced, and try again.
Thanks