untill now there has only been a single 1coin that is alive and well , all the others that you mentioned have been scams of huge porportion and never lasted very long and were uncovered as scams very fast! im not sure if this is just another attempt by the same gents to relaunch the same stuff or not but all together this is still a very bad start for anything and can never have anything positive come of it untill it does alot of changing as in the first thing would be its ticker "ONE" to anything else
Well its a good thing that the ticker is one of the easiest things to change in a coin, especially if it didn't even launch yet. I just doubt this "dev" will make that effort.
Strange though that the 1coin you mentioned picked the ticker ONE instead of 1COIN, my first thought was that numbers were not allowed in the ticker for some reason, but I see plenty of coins using it that also trade on exchanges: 1ST (first blood), 2GIVE (2give), C2 (coin2.1), NLC2 (no limit coin) to name a few.