States’ largest cities that will vote for Trump.

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Illinois: Decatur
Maryland: Salisbury or Cumberland
New Jersey: Lakewood
New York: Utica
Pennsylvania: Altoona
Tennessee: Murfreesboro
Texas: Probably Plano, if not then definitely Lubbock

Decatur voted for Clinton by a not-insignificant margin.

For the record, the largest city to vote for Trump in IL in 2016 was Orland Park, which was around Trump +9-10 (imprecise precinct estimate). It is possible that it will vote for Trump again, though in this environment it's probably a tossup.

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Trump ended up winning Orland Township by 13 points.  Larger than his 2016 victory and even more than Romney's 2012 margin.  Certainly his largest municipality victory in Illinois.

Interesting to see how it has diverged from demographically similar areas in DuPage County.

Did he or does it still have many outstanding ballots?  In Illinois, places with few outstanding ballots, Trump is either flat or gap widening.  Places where it narrowed are mostly places with still many ballots to count and we know mail in tend to heavily favour Biden.

Yes, the ballots in IL have been breaking heavily Democratic (especially in Cook which has a huge backlog of VBM still). Trump is now ahead in Orland Township 52.87%-45.67% - slightly ahead of 2016 - but Biden can very likely narrow that.