The Great Lutheran Khanate?
The earliest reference to the Khanate that I could find was a throwaway joke tweet by @MattOsterndorf on September 14th, 2019, where he joked about putting "High Plains Lutheran Khanate" in his Twitter bio.
Though this was the earliest tweet I could find, the idea actually originated with Reverand Chris Jackson - a huge proponent of the Khanate who frequently joked about the idea and (thanks to his large following) has helped popularize it through twitter. Unfortunately Rev. Jackson has since deleted his twitter account and I do not have screenshots of the khanate tweets.
In the nearly two years since Osterndorf's tweet, the meme has taken off. Nearly all of Lutheran twitter, from just about every denomination, now puts the bison emoji in their profile somehwere. The bison, at this point, has become a way to signify "Lutheran" on Twitter in general.
Every year Reverend Jackson would put on the hugely popular "Lutheran Twitter Championships" wherein we all get to decide who the best Lutheran on twitter is through a series of polls. Since leaving twitter, he has passed the torch over to @TimesNewEmma who rebranded it as "The Great Lutheran Khanate Championship", and crowned the winner our new Khan:
Merch & Twitter Account
It also has it's own Twitter Account: Lutheran Khanate Posting
Significance & Meaning
At this point the joke, I think, has come to mean something a bit more for all of us. While none of us actually want to form our own bison-based fuedal state in the American plains, we all enjoy the idea of a religious community of Christian believers working together. There is something about the idea having our own place where we can gather as a larger family, helping one another, and worshipping our Lord as we see fit.
Perhaps, also, the idea of a just ruler or government based entirely in Christian worship is appealing to a lot of people these days.
I don't know. I'm just answering questions about it.