A fair search on google doesn’t revel his party either.
The city website has all previous election results wiped out.
A clue: Romulus Presidential Votes

I could not find any affiliation either but will search a little more. His election stats might reveal something if they’re available.
I see he endorsed a Democrat running for the MI House of Representatives in 2014.
Burcroff endosed another Dem in 2016.
I think we know how he rolls.
Someone did a pretty good job covering up his party association.