So, I listen to several podcasts by people who are the children of Indian immigrants to the US, and I swear there's a very slight accent feature, where the K sound is closer to a G. So, e.g collection is closer to gollection, or company is toward "gompany." Is this a thing? Possibly it's actually a California accent, since most of them are in the Bay Area, but I don't think I've heard it elsewhere.

In general, is there a study of kids-of-immigrants' linguistic features?

@ZachWeinersmith Yes, this is a thing -- reduction of voice-onset-time, a phonetician would call it.

And there are tons of studies of immigrant community linguistic features! I know them mostly in the UK context, though.

Here's an early one: https://eresearch.qmu.ac.uk/bitstream/handle/20.500.12289/32/Lambert_ICPhS_1312_2007.pdf?sequence=1&isAllowed=y

(although it found no difference in voice-onset time between immigrant and control groups)

There have been more since then out of Jane Stuart-Smith's lab.