Who makes nibs for who?

[Turquoise]

I know some companies make their own nibs in-house, whereas others contract with other makers (primarily Jowo and Bock) and then personalize or fine-tune them.

I’m wondering who makes nibs for which companies? I’ve found a couple of articles online (FPN http://www.fountainpennetwork.com/fo...st-nibs-today/ and Daniel PI http://danielpi.com/fountain-pens/20...who-makes-them) but both were written around 2015, and I’m guessing some things have changed since then.

Can anyone weigh in on who makes their own, who contracts with Jowo, who contracts with Bock, and who contracts with other minor vendors?