What Skin temperature sensors available in market?
Core temperature sensor
Galaxy watch 6 classic - temperature reading
Looking for precision temperature sensor
you can look at this, some claim better than 0.5 but then you look up the the datasheet and they say and accuracy of .5C so that might be about all you can get unless you start looking a lab grade quality equipment. which may or may not have some sticker shock... and of course is just the probe, you will probably need a very high quality ADC to get that 0.01 precision the Arduino one won't cut it.
Edit: something more affordable but will still need a better ADC and analog noise filtering.
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I am working on a project related to stress detection and I require a skin temperature sensor to integrate it with an ESP32. I would prefer it to have a wide community base so that I can code it with help from outside. Also, are there any good heart rate sensor that take wrist data. I, currently, am using MAX30100 and it is giving problems with integration with other I2C communication sensors.