Wake is uniquely suited to be a Water-type Sun sweeper. So with that in mind, some great teammates for that particular playstyle are:
Torkoal as the setter of said sun while also acting as a physical tank, spinner, rock setter, and status spreader
Great Tusk is still able to do everything it does but even better in the sun. It can do most of what Torkoal does but also has Knock Off and incredible offensive capabilities
Hatterene keeps hazards out with Magic Bounce, keeps the team healthy with Healing Wish sets, and can take a hit for your team and use Eject Button to safely bring in an offensive threat like Wake or just eat the Dragon type moves that threaten Wake outright.
Some other options are Protosynthesis mons like Roaring Moon and Brute Bonnet which become extremely hard hitters under the sun. And, of course, Fire types love 50% boosts to their STAB moves. Notably Skeledirge and Ceruledge provide defensive utility with good bulk and Unaware and Flash Fire respectively.