All electric vehicles are effectively automatic as there’s no gearbox just forward & backwards.
Nearly all are button start if not all.
Kona premium se has powered seat plus heated & cooled but no power tailgate as mentioned. If it ticks all the other boxes it might be the case of getting a kit to add it to a Kona if nothing else suitable.
Mazda cx30 has everything you want at GT Sport trim but it’s a mild hybrid not an EV & the higher trims are pricey.
Can’t think of any EVs that meet all requirements yet.