i think the difficulty is - its a bit of a how long is a piece of string question
i'm not sure if there is even a strict scientific definition of what elements are electrolytes vs say trace minerals
some info here on what are typically considered electrolytes
https://www.healthline.com/nutrition/electrolytes#definition"Electrolytes found in your body include:
Sodium
Potassium
Chloride
Calcium
Magnesium
Phosphate
Bicarbonate"
you can get basic average suggested value for the main ones from places on the web
however - your needs will vary by
-bodyweight
-climate
-activity level
-liquid intake
-metabolism
-diet
etc
so i think there can only be a guide - your body has mechanisms to help keep them balanced within reason though - so only some are typically deficient