32 out of the 54 "escort ships" form four flotillas. Each flotilla is centered on 1 DDH and 2 DDGs. The names of the DDHs and DDGs in each flotilla go as follows.
Escort Flotilla 1: Izumo, Kongo, Hatakaze, +5 others
Escort Flotilla 2: Ise, Ashigara, Kirishima, +5 others
Escort Flotilla 3: Hyuga, Atago, Myoko, +5 others
Escort Flotilla 4: Kaga, Chokai, Shimakaze, +5 others
Hatakaze and Shimakaze are the last old non-aegis DDGs so, like you imagined, it seems likely the two Maya ships will fill in their spots within the flotillas that will have the F-35 capable Izumo and Kaga.
Edited by JasonJ, 28 June 2019 - 2316 PM.