At which airports does a Kuwait Airways flight to New York stop?

I'm an Indian citizen and will be travelling JFK-Delhi-JFK next month with Kuwait Airways transiting at Kuwait each way. I've a US visa, of course, but I really want to know what other visa(s) I need.

Transit Visa needed for Kuwait?

By this answer, it seems I will not need a transit visa for Kuwait since my layovers are both less than a day.

However, I was also recently told by a friend (a EU national) that the JFK-Kuwait flights stop (apparently to refuel) at London in between. I also saw this online

http://www.emirates247.com/news/region/kuwait-airways-to-ny-security-stopover-2016-06-26-1.634063

At what place or places does the Kuwait-JFK flight stop actually? Is this still true? If so, do I need transit visa(s) for this?

I also went to the UK visa website and used their tool to see if I needed one. It told me that normally, Indian citizens on air side transit (no immigration) do not need visa while flying to or from the USA (among other countries). What sort of transit is this one? I've never ever been on a flight stopping for maintenance.

Is there a way to find out if I need a transit visa for a layover in the UK?

Also, this answer. I couldn't find anything about the 'security' stop at Ireland.

I'd appreciate some advice on this. Is there anyone here who has made this journey (JFK-India) by Kuwait before? There is still time for me to get transit visas, but it's extremely important for me to not miss any of these flights because of tight schedule and budgets.

If you're not sure, you can also give me places I could contact to be absolutely sure before I fly.

Please note that this question is not an exact duplicate of either question linked above. What I'm primarily asking are:

(i) Where does this Kuwait-JFK flight stop in between? (ii) At these places, do passengers pass immigration and/or security and if so, is there any reason to require transit visas?

I've contacted the airline, but the two times I called, they gave contradictory info. The operators on the line seem to have not much clue.

Thanks in advance.

Update: I've been able to further figure out that when I travel, there will be no operational stop at Ireland, but one at London Stansted. Stansted has no air side transit, so I'll need to pass immigration. The UK visa website says that an Indian national with valid US visa and onward ticket 'might' be able to pass immigration. I have never encountered 'might' in visa eligibility rules before. What is this supposed to mean?

Further update: This concerns a different flight of the same airline, again with a stopover in UK.

https://www.kuwaitairways.com/en/is/useful-information

They say that if one has a valid US visa, they don't need a transit visa- unless, they are Indian nationals. That is just outrageous in my opinion, because clearly the UK visa authorities don't have this 'unless' clause anywhere (and even if they did have something like this, I think it very unnatural to apply to nationals of only India). So that is that.