Seems like ABC vs SV, others limited hashrate.
SV wants bigger block size, probably doable within time frame.
ABC sharding system thing, maybe doable within time frame or next hard fork after that,
Unlimited and XT seem to have limited to no support on Twitter. Unsure if they even have any hashrate outside of Bitcoin dot com miner pool.
Could be possible BMG or Coingeek could flip to support XT or BU, Have yet to here any noise on Twitter about BU and XT.
