Amish people are about 0.1-0.2% of White US adults, Mennonies about 0.2-0.3%. Things I would expect to move the numbers are that 0.5% of White and 2.3% of Black Americans are incarcerated, and that about 0.7% of adults are in nursing homes (with no apparent difference between racial groups).
Not conservative at all.
They do have some MAGA friends, "Try supporting Manchin, honestly i don't blame them", and honestly it was really enlightening.
Have you also considered that white people are the only ones likely to have a landline but no cell phone? Due to the terrible design of the study, it excludes people who didn’t respond (which has many of the racial groups you incorrectly attributed as 100% having mobile phones).