A chain catcher is helpful in all situations to prevent the chain going inside of the granny ring.

I have found that bar ends and Campy left shifters result in an incremental small movements of the FD which helps reliably move the chain off the middle ring onto the small ring. The Shimano design makes one spring release movement which is more likely to fail to move the chain. I like a Shimano 105 FD for its large stiff cage but any modern FD will work.

I have not used one but it seems to me that an electronic system would by its nature move the FD smoothly like a bar end and have that benefit in addition to higher force than a spring release. It is only the one step spring release of the Shimano mechanical FD that causes the most problems with shifting under loans.

Another factor that helps shifting into the granny easily are lower cadence/higher chain tension. Shifting into the granny is more difficult for any system at low cadence and high chain load adds to the problem. Often teams get trapped grinding up a hill at 80 or lower cadence and can't let up making it hard for the FD to move the chain. Even at full power I can shift the chain into the granny easily if the cadence is 90 or above. I often don't announce double shifts for this reason. Then again my stoker could pick up on the RD shifting up a couple gears and knows that is happening just as I start to move the FD. She may be letting up on the power just a little but I don't notice it.