[craven88]

Would sucrase be classified as a oxidoreductase, a transferase, a lysase, an isomerase, a hydrolase, or a ligase enzyme?

My best guess is that it would be Lysase because water is added to the sucrase. The H2O breaks the bond or the oxygen bridge and then forms the glucose and fructose. But I could be wrong.

[Yggdrasil]

The H2O breaks the bond or the oxygen bridge and then forms the glucose and fructose.

Isn't this what hydrolases do?

[Babcock_Hall]

There is no such thing as a lysase.  There are lyases:  any of a class of enzymes that remove groups from their substrates (other than by hydrolysis or oxidation), leaving double bonds, or that conversely add groups to double bonds.