You can locate the different account types by scrolling through the Market Watch pairs/instruments. If you can't see them/any, right-click on a pair/instrument and click "Show All".
EURUSD $7 Commission Standard ECN account: Majors pairs have a medium spread.
EURUSD.pro $8 Commission Standard ECN account: Majors pairs have a smaller spread.
EURUSD.var $0 Commission VAR pairs have no Commission and higher spreads.
EURUSD.Mini $1 Commission Smaller lot sizes (1 lot = 1000).
Different account types are only available for Forex and certain other symbols.