Ok i would assume that nimbus of light and searing light count as light based spells but what else does.

see ive never bothered with holy smiting enhancements cuz i never used the allignment spells. but for some reason my blade barrier never did very much damage when i first started out i was told that bb fell under the healing for its damage never made sense to me but i went with it.

so What does BB count as and what all spells count as light based and is taking smiting enhancements gonna be worth it.