A form of Ulu is the name Ullu.
Ulu is not often used as a baby girl name. It is not in the top 1000 names.
Baby names that sound like Ulu include Ullu, Ulli (German and Estonian), Aello, Aelo, Ahlai, Aila (English and Finnish), Aili (Scottish, English, and Finnish), Ailsa (Scottish), Ala (Polish), Alah, Ale (Lithuanian), Alei (Hebrew), Ali (English, Spanish, and Arabic), Alie (Dutch and English), Alla (Spanish, English, and Russian), Allei, Alley (English), Alli (Finnish, English, and Spanish), Allie (English), and Ally (English).
† approx English pronunciation for Ulu: AH as in "mud (M.AH.D)" ; L as in "lay (L.EY)" ; UW as in "two (T.UW)"