Variable naming conventions, general + specific or specific + general

Your first example is the way to go.

If you need to group related variables, consider using a struct instead of devising an unorthodox naming convention. It will be easier to read, and I think you’ll find much nicer for yourself and any developers you may work with down the road.

Sample Code:

 public struct UnitsRegen
 {
     public float baseValue;
     public float deltaValue;
     public float timeDelay;
 
     public UnitsRegen(float _baseValue, float _deltaValue, float _timeDelay)
     {
         baseValue = _baseValue;
         deltaValue = _deltaValue;
         timeDelay = _timeDelay;
     }
 }
 
 // Instantiating the struct.
 UnitsRegen unitsRegen = new UnitsRegen(3f, 0.2f, 0.5f);
 
 // Access your instance.
 float currentBaseRegen = unitsRegen.baseValue;