Based on the article from this post it looks like they cut it by .00140 for one pay: IONIQ5 Lease numbers - #2 by Leasefan
So you would need a money factor of .00140 to start with, which is below base currently.
I asked the dealer and their MF on one pay is .00108, so as I understand it I can’t get any lower than $16k one pay without bigger discount.