It seems to be difficult to investigate about that without outright asking, as all Doge communities/forums are (of course) dominated by memes. 

Discussion on https://www.reddit.com/r/dogecoindev/ are good imho (I do moderate that sub).
Here is also a cool alternative to OP_RETURN messages to store data (haven't gave this a try myself yet): https://opreturn.net/p2shdata/