Additionally to what has already been said, in 02/um Goro's far B, B ukemi was a great way into his mixups, canceling to cloud catch gets back dashes and jumps, his invul throw got anyone who stayed on the ground and didn't alt guard (people think they still have throw invul), quake could hit alt guard if they stood during impact (but this was slow so it could be reacted to), and counter took care of reversal specials.
In XIII it was mostly the same but he lost the regular counter mix and gained EX quake which hit alt guard much better due to speed. unfortunately some characters could beat all of his options (sans Neomax, but who'd do that for a mixup) using a single move, Terry could rising tackle, Takuma could hien shippukyaku, Clark could delayed EX gatling, etc. etc.
In XIV there is speculation he'll receive his old DMs, one of which has a long period of armor before grabbing the opponent, so he may effectively have the mixup options to handle all situations if ukemi still functions the same way.
I don't know about Shingo's special roll, not sure if it could be cancelled or not, so I don't know it helps in the same way.