Here's your best source on the issue, it's kept up to date year to year. You can drill down to the county level as well. https://verifiedvoting.org/verifier/#mode/navigate/map/ppEqu...

Note that the map colors DRE w/ voter verifiable paper audit trail as (lightish) red. That's consistent with the prevailing opinion today that DRE w/ VVPAT is inferior to paper ballots with precinct tabulation (because voters do not necessarily actually examine the VVPAT), but does tend to make the current situation look worse than it is due to Nevada.