Yes DigiByte adapted the idea from Myriadcoin back in 2014. But Digibyte hardforked into multialgo, which probably no other coin has done so far. It is by far the best UTXO blockchain out there. And they are still improving it. New 5 new algorithms will be coming out later this year if the original plan still holds. Digibyte is also known for being sure things work, before they launch. Nor do they pump up the coin with news. "Well managed", is being modest.