Are My Buffs Good?

Is there anywhere stated how much the buffs are increasing by?

There’s Attack Up and Greater Attack Up, but all I know is one is better, and they increase my Attack. Do they scale by 10% and 20%? Is the buff up different from Hazel’s vs Tamarinne’s? Are they using other elements to influence the increase? Do we just not know?

Same basics of the question apply to Defense up, Evasions, etc. that really do not mention a scale (kinda like some Barriers do say). What are my buffs doing?! (Beyond the obvious)