Here's a brief rundown on how the current ladder looks like (China excluded due to missing numbers) based on the 292 595 players (accounts) who have finished their 1v1 (hots) qualifier games.
Numbers are for all regions combined.
EU is the most populated server with 122k players, NA second with 118k, KR/TW third with 46k and SEA least populated with 9k players.
0.27% of players are in GM, 2.29% are in Masters, 3.97% are in diamond, 6.37% are in plat 17.05% are in gold, 28.36% are in silver and 41.70% of players are in bronze.
In all leagues except bronze the average player has slightly more than a 50% winrate. (GM:55% M:54% D:53% P:53% G:54% S:53% B:43%) On average Master players are the ones with the biggest unused bonuspool (GM:33 M:288 D:131 P:147 G:176 S:213 B:263)
In total Protoss is the most played race outnumbering Zergs by 4.2% and terrans by 7.3%
In the GM division there are 30.5% more protoss than zergs, and 100% more protoss than terrans. (Zerg outnumbering terrans by 54%)
In Masters there are 6% more protoss than zergs, 40.2% more protoss than terrans. (Zergs outnumbering terrans by 32.2%)
In Diamond there are 7.5% more zergs than protoss, 26.9% more zergs than terrans. (Protoss outnumbering terran by 18%)
In Plat there are 13.7% more zergs than protoss, 30.3% more zerg than terran. (Protoss outnumbering terrans by 13.7%)
In Gold there are 17.1% more zergs than protoss, 30.3% more zergs than terrans. (protoss outnumbering terran by 14%)
In Silver there are 4.8% more zergs than protoss, 17.3% more zergs than terrans. (Protoss outnumbering terran by 11%)
In Bronze there are 1.1% more terrans than protoss, 28.6% more terrans than zergs. (Protoss outnumbering zergs by 27.2%)