The OnePlus Nord N100 actually has a 90 Hz display
When OnePlus launched the Nord N10 5G and Nord N100, it claimed to have produced its first 60 Hz smartphones in a few years. However, Android Authority has determined that it is not the case with the Nord N100. Instead, the Nord N100 over-delivers on its launch specifications.
As the screenshots published by Android Authority show, the Nord N100 actually supports a maximum refresh rate of 90 Hz. OnePlus has not gone to any lengths to hide this either, allowing people to freely cycle between 60 Hz and 90 Hz from within the main settings menu.
OnePlus only confirmed that the Nord N100 had a 90 Hz display once asked by Android Authority. Apparently, OnePlus did not clarify why it marketed the Nord N100 with a 60 Hz display. It does list 90 Hz on the 'Specs' page of the Nord N100, though.
It seems odd for OnePlus not to market 90 Hz as a feature on the Nord N100, like it does with the regular Nord or its other smartphones. The Snapdragon 460 chipset inside the device could be the reason why OnePlus decided against marketing it as having a 90 Hz display, but Realme does with the C17.