Seintologist or Saintologist: How To spell?

The word Seintologist is misspelled against Saintologist, a noun meaning "One who writes the lives of saints."

Word contains consecutive vowels 'AI' in between alphabets s & ntologist is misspelled as 'EI'
Wrong Spelling:  s-ei-ntologist 
Correct Spelling:  s-ai-ntologist 
Find more incorrect spellings of Saintologist to spell right way.

You might be interested to know

Steir or Stair?

Susteinment or Sustainment?

Thomeism or Thomaism?