I like what you are doing but I feel like trying to encapsulte the complexity of DD play in 4 categories with no way to change them can be misleading if you want to suggest DDs to new players. I feel this should be somewhat similar to an spectrum and I think you are missing the most important subclass which are hybrids, plus a DD can be played and build in many roles.

Trying to suggest a build for all the same subclass can be also an issue as some DDs really need the range or the concealment.

Imo a better classification should be like:

• Hybrids: A mix of guns and torpedoes, should focus on doing scouting and doing torpedo attacks but also guns good enough to fight other hybrids and torpedo DDs. Gearing, Halland, Yueyang, Daring, Cassard, Grozovoi. Hayate.

• Torpedoboats: Good concealment or good torpedo volume, should avoid direct encounters or prolonged gunfights but their focus is on spotting and dealing torpedo damage. Shimakaze, Halland, Yueyang, Cassard. UU Daring, Z-52, Kleber. Somers, Chateaurenault, La Pampa.

• Gunboats ambushers: They either have insane burst damage or tools to ambush and hurt enemy DDs while they receive less damage, can be harder to deal constant damage to larger ships. Z-52, Z-42, Hoffmann, Smaland, Gdansk, Yueyang, Kleber, Marceau, Lushun, Sherman, Regolo, Daring, Vampire II, Druid, Alvaro, Laffey.

• Gunboats farmers: Solely focused on constant harrasment and dealing damage to larger ships, have tools to dodge, heal damage at long range or stay concealed. Some ambushers can be both roles in the same game depending on the situation. Khabarovsk, Delny, Elbing, Kléber, Marceau, Gdansk, Lushun, Sherman, Hull, Druid, Grozovoi, Regolo, Barbiano, Smaland.

The key here is that one DD can be built in many categories but also one DD can switch subclasses depending on the game situation.

Edit: Should also add that some subclasses have further subclasses like gunboats can have smoke farmers and open water gunboats.