EA is an American thing I guess. Are they pretty dominant as far as the number of installations go? You would think that Chargepoint etc would want to appeal to as many customers as possible. Interesting times ahead. But for the time being it’s 50-50 Chademo/CCS here.
EA is "Electrify America", and as far as non-Tesla QC sites for road trips, yes, they're dominant here (233 sites as of today with more to come), all courtesy of Dieselgate. See https://www.electrifyamerica.com/locate-charger
At least for now, EVGo actually has more sites* than EA, so in one way, they may be considered "dominant", since they have the largest non-Tesla charging network in the US. Unfortunately, most of those sites are "50kW" chargers as opposed to the 150-350kW (CCS) chargers that EA is installing.
Of course, EA is growing much faster than EVGo, and it's only a matter of time before they are overtaken.
*The catch here is that each EVGo site only has one dual-plug (CCS + CHAdeMO) charger. EA may have more actual chargers in the ground today, I don't know. My point is that EVGo is doing the most to keep CHAdeMO "alive" in the states.