Levites & Priests – Numbers 18:21-32
Provides food for Levites who served and ministered, who were not supposed to be spending time on farming. A tenth of tithes then went to the priests.
For Yourself During Feasts – Deuteronomy 14:22-26
A self-consumed tithe eaten in Jerusalem during the pilgrimage feasts—obedience brings communal joy.
Levites, Sojourners, Fatherless, & Widows – Deuteronomy 14:27-29
Israelites stored local tithes for sojourners, fatherless (orphans), and widows. Yahweh always had a plan for them.
Are These Overlapping or Distinct Tithes?
It's not entirely clear how these tithes do or don't overlap. Certainly there is a possibility for overlap, but that's not really, entirely clear.