Only one type of ACIII coach has been reported, actually there are two types of ACIII coaches and third type has recently been tested at 180kmph
(1) ACIII-normal/standard, (8 coupe-64 berths-ICF, 9 coupe-72 berths-LHB)
(2) ACIII economy old in Garibrath with (9 coupe-81 berths-ICF with side middle berths)
(3) ACIII economy new (10 coupe-83 berths without side middle berths)

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FC coaches are like 1A non-AC .

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New ACI LHB coaches have 24 berths or 4 nos 4 berth cabins and 4 nos 2 berth cabins.
Earlier ACI ICF coaches used to have only 18 berths or 3 nos 4 berth cabins and 3 nos 2 berth cabins.

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Also there are double decker coaches
non AC double decker chair car
AC double decker chair car- 128 seats (original-used in HWH-DHN ACDD)
AC double decker charcar - 120 seats (modified one and prevalent)- Lower Deck-48, Middle deck-22(16+6pantry side), Upper Deck-50)

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