Smallmouth in the river below Sauble Falls. Upstream even better Bass and some small Pike, especially in the feeder lakes (which also have LM) to the north. If you have a canoe or kayak, a float trip down the Rankin R. (trib of Sauble R.) can be very rewarding.
Musky in the middle section of the Saugeen is your closest best bet (again a float trip will get you to the best spots). SMB throughout, and some big Cats in the lower river.