Happiness is happiness which always good no mater how the intensity of it. Still, if you grade the happiness in terms of vocabularies, they are as follow:
High intensity of happiness:
Elated, Excited, Overjoyed, Thrilled, Exuberant, Passionate, Ecstatic, Fired up
…..
Medium intensity of happiness:
Cheerful, Gratified, Good, Relieved, Satisfied, Glowing
………
Low level of hapiness
Glad, Contented, Pleasant, Tender, Pleased, Mellow
