I don't know if LDS Mormons are borrowing ideas from WT, or if GB helpers are just peeking at LDS stuff and then pass on similar ideas to the GB who run with it as their own.
Several years ago I did hear a rumor that Morman LDS leadership had approached JW GB leadership about the possibility of merging. I stayed alert to any indications to support the rumor.
When WT began rebranding itself with younger GB, new corporate extensions, and .org media (which is eerily similar to preexisting LDS Mormon media) that would have been a good time to deploy a merge, but obviously they did not merge, only used similar rebranding strategies.
It is curious... both JW & LDS began publishing video "broadcasts" from leadership (yes, actually called "broadcasts"), also a talk show style feature with missionaries like the JW "Inside Story" which LDS named "Face to Face", and even an animated video series for LDS children with a character actually named "Sophia" just like the JW Sophia from "Caleb & Sophia"... Oh, and let's not forget the embarassing WT attempt for a JW "choir" led by Maestro David Wannabe Splane which falls embarassingly short of the Mormon Tabernacle Choir.
The similarities don't end there.
"Check it out"...
"Get the facts"...
See for yourself:
https://www.churchofjesuschrist.org/media/collection/broadcasts?lang=eng
Mormon "Sophia" Animated Videos
https://www.churchofjesuschrist.org/media/collection/face-to-face-events?lang=eng