Depends on the logic command status.
If a OTL was used last used an no OTU in a power up routine to unlatch, they usually they will come back latched.
If OTU was last used and no OTL hits it then it should be unlatched.
IF its a OTE, it depends on the rung commanding it.
Allen Bradley warns about this, that outputs CAN come back as their previous status and so using OTL and OTU is generally not recommended for that reason specifically.
It REALLY depends on how your site logic is programmed. I've gone through mine and hit every single motor HMI bit with a OTU on the first scan. That makes all of them unlatch on power up. To help prevent the motors from firing up on a PLC restart from power failure, ect.
PROPERLY programmed IMHO they would all be off. Protected/Controlled by self collapsing latches. Use a pulse to start, then the output holds itself running.
I have some field controls that are physical switches that hold in position, on powerup I put a protective rung in that if on first scan they are in the run position the motor will not start until the switches are placed to off. Then you can flip them to run to start the motor without issue.