MS People

Community
AnIyer - https://blogs.msdn.com/aniyer
geekSpeak - https://blogs.msdn.com/geekSpeak/
GlenGo - https://blogs.msdn.com/GlenGordon/
MithunD - https://blogs.msdn.com/mithund
WoodyP - https://blog.pewitt.org/ 

Dev / Arch
AntonD - https://blogs.msdn.com/codedebate
DaChou - https://blogs.msdn.com/dachou/ 
DSyme - https://blogs.msdn.com/dsyme/
ScottGu - https://weblogs.asp.net/scottgu/
TimHeuer - https://timheuer.com/blog/
VittoriB - https://blogs.msdn.com/vbertocci

BI / SharePoint
BI Team - https://blogs.msdn.com/bi/
JaimieMac - https://blogs.msdn.com/jamiemac
PAndrew - https://blogs.msdn.com/pandrew
SharePoint - https://blogs.msdn.com/sharepoint/
SQLDataMine - https://www.sqlserverdatamining.com/ssdm/

ITPro
JSnow - https://blogs.technet.com/jsnow