Baalist

Etymology tree
Proto-Semitic *baʕl-
Biblical Hebrew בַּעַל (báʿal)bor.
Ancient Greek Βᾰ́ᾰλ (Bắăl)bor.
Late Latin Baalder.
Proto-Semitic *baʕl-
Phoenician 𐤁𐤏𐤋 (bʿl)der.
Proto-Semitic *baʕl-
Ugaritic 𐎁𐎓𐎍 (baʿlu)der.
English Baal
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English Baalist
From Baal + -ist.