Quoted from schudel5:
A great way to probably get 90% of your list in 10 seconds is go to ipdb.org. Go to advanced search. Type 'outlane gate' into the notable features search field.
I thought of that...yet when you look at a game that has this feature on IPDB (ex: Defender) the feature isn't listed. Look at another game that has the feature (ex: Sea Ray) and it lists it as a "Right outlane ball return gate" yet only the word "gate" is highlighted as a link. I was trying to look for a link for that feature instead of searching the term in the advanced search.
When I do search what you suggested there are some not listed (as Defender is missing) and the others seem to be 50/50 if the gate in question is diverting the ball to an in lane from the outlane or to the shooter lane from the outlane. So doing that search isn't quite as easy as you made it sound.
It seems that a lot of people were confused by the question. I mean a way to get the ball back to the shooter lane by means of a gate that is either opened or closed by the game by completing a certain game goal. So TWD and ST are out. They are just shots to the shooter lane. I honestly can't think of any DMD games that has a gate that does it.