My Folding bike is as if a step thru, so I use one of those other types, or
more than one..
Rt. pedal ahead of TDC, swing Leg over, push down pedal then rise to the saddle
BF, PL, It's got a Higher BB, so if I have to stop and put a toe down, I have to slide off the saddle.
the Scooter method,
foot on left pedal, push off to get some Momentum.. swing the right over saddle
or being a low top tube, in front of the seatpost.
to get off, I can swing my leg over the top tube, in front, because it's low.
Decades ago did learn the Cross Dismount , Re-mount, but as Races were far away I never tested that .
now I'm old,
it doesn't matter..