Sort Pivot Table Based on Partial String

I've got a group of data within a pivot table that I want to be sorted based on only part of the string.

For example,

Standard Kitchen
Standard Master Bath
Standard Hall Bath
Optional Kitchen
Optional Basement Bath

First they would be sorted by whether they begin with Standard or Optional. Then within those groups, they would be sorted whether they contain Kitchen anywhere in the string. So that the order would be Standard Kitchens, Standard Anything Else, Optional Kitchens, Optional Anything Else.