Ask what a practice delivers at the end of a strategy engagement and how it measures progress. A good fit leaves a plan you can act on with or without them.
The directory has four vetted practices that list strategy among their specializations: Mashman Consulting Group, Kathryn Holeton, JaKe X, and Orchard Strategy. They are based in Barcelona, Cataluña, Knoxville, TN, Little Rock, AR, and Taipei City, Taiwan, and they are three independent consultants and one consultancy.
As for how they work, two offer done-for-you work, where the practice does the work; three offer done-with-you work, where the client works alongside the practice. Of these, three work with clients remotely anywhere and one works both remotely and in person. Time zone: US Eastern, Central Europe, and US Central. Between them they work in English and Mandarin. On the PBA scale they span price tiers $$ to $$$$ (what the tiers mean).