You can find out more specifics per state at NIMJ's "State Codes."
A general review suggests many state UCMJs are out of date. There have been several major changes to the UCMJ over the last five years and the state legislatures haven't caught up.
Nevada National Guard members have fewer legal protections than civilians, most other states’ Guard members, and members of national military branches such as the Army and Air Force.
The right to demand a court-martial instead of accepting certain administrative punishments was taken out of state law in 2019 at the urging of the Nevada National Guard, just four years after it held the opposite position.. . .
"Currently, Nevada is one of only a few states where National Guard members lack the right to demand a court-martial," Wagar said. "This lack of due process undermines the principles of justice and erodes trust in the military justice system."
From the Reno Gazette Journal.
Most interesting is the cost estimate for adopting the right to refuse Article 15 punishment, which ranges from zero to $1.2 million for just three courts-martial.Gray said this shows that the Nevada National Guard’s official estimate to the Legislature of three court-martials a year costing about $1.2 million does not stand up to scrutiny because it’s extremely rare for a military service member to ever request one.
Gray shared a letter he received Wednesday from Maj. Gen. David Baldwin, who has led the California National Guard since 2011. Baldwin wrote that during his more than 40 years in the Guard, he’s been involved with hundreds and possibly thousands of cases where the accused had the option to turn down a nonjudicial punishment in favor of a court-martial — and only one ever did.
We suspect (partly on our own experiences advising servicemembers) that the number of Article 15 turndowns in the active duty force is similarly few.