Upon more noodling I may go with the reversed fore-aft pattern with a side to side reverser on the trans. Leaving the fore and aft cable below would result in a different pattern; Start with 1 would be left down, 2 left up; flipping the pattern top to bottom, bottom row odd, top row even.
I drove an old race car from the 60's, it had a strange pattern! And was rt hand drive/ left hand shift. That pattern had 1st down left, rise to neutral, dog leg slightly right then up for 2, down thru neutral to 3, Up to neutral dog leg right and up to 4. I think this car's trans was actually an existing 3 speed trans with an under drive to make 1st gear?
Another that was left hand drive with the shifter(left hand) by the door! It was the normal pattern 4 speed but gated. All pretty funky!
NOW! MY POINT! The "shift pattern" we know now, is an industry standardization! Shift patterns do not have to stick to this pattern but they do because most drivers now will easily use it! Making the car more saleable. Consider this: IF you are the only driver for this car what dang difference does shift pattern make? The human/machine interface is a problem in a mass market product BUT your car is not mass market! Consider doing what works VS what matches the mass market. Right hand drive cars have the gas pedal by the door! and the shifter in the middle. It is a real challenge changing back and forth between the styles in a day! Belgium is a LHD country and England is a RHD country just a 2 hour ferry ride away! Those were some messed up vacations!

I can hear the Wife hollering, "Keep left, Keep LEFT!, You're OTHER LEFT!!!"
Gas pedal is always on the right because most people are right biased. A friend has a damaged right leg. He does ok in a regular car but he is aging and pushing the gas pedal is getting harder. I installed a second gas pedal on the left, on the other side of the brake pedal in his 69 Chevy(auto trans). He SWORE he'd never learn how to operate it! (It took him a day. Now he can do burn outs!) It cost me $30 for a van pedal and cable but his goofy grin is seared upon my memory!
At the dawn of the automobile there were tillers not steering wheels, throttle was a lever by or on the column, many used a long lever by the driver for the brakes and most cars had 2 fwd and 2 reverse gears and you shifted by another lever that disengaged drive and you pushed a pedal for a gear and reengaged the drive lever. (a little like a motorcycle.) The first cars were really, literally contraptions! No two brands drove alike!