Kaibokan (Japanese ASW ships, AKA, "Coast Defense" (CD) ships). The CD designation is then followed by a letter related to the sub type, though they were all similar.
CD-A "Etorfu". The Etorfu Class was an improved version of the Shimushu Class before it. A model of this would work for both. (17 hulls built):
CD-B "Nomi" (a Mikura Class Kaibokan):
CD-B "Ukuru". Ukuru was an improved Mikura Class, again, 1 model does both (37 total hulls built):
CD-C: Nothing here, but the C and D only differ in the specifics of propulsion, and the stack (which was shorter than the CD-D diagram below, and slightly wider). The D's used a 1-shaft geared turbine, and were given even numbers (CD-2, CD-4, and so forth), the Cs had 2-shaft geared diesels and were given odd numbers. There were 132 DC-Cs ordered.
CD-D (143 units ordered):
Many of the CD-C/D types were actually built. Over 100. By far the most common ASW asset of the war. Add in the similar A and B types and we have HUNDREDS of missing escorts—more than all the IJN DDs in services combined.
VERY needed (I made some erzatz versions that are "close enough" but the real thing would be cool to see).
After this, Matsu Class DEs would also be neat to see (28 hulls). These were quite decent escorts.