Here goes, AFAIK correct, but please correct me if I'm wrong:
The A1000 uses kickstart disks.
A500, A600 & A2000 (inc. A1500/2500) use the same kickstart chips, one single chip. The A600 requires atleast v2.05 (v37.300) in order for the IDE and PCMCIA to work. Kickstart 3.1 version number is v40.63.
The CDTV use the same chips as A500/600/2000, but require two additional chips for controlling the cdrom drive and providing the boot anims.
The A1200 uses two chips unique for the A1200. Kickstart 3.1 version number is v40.68.
The CD32 uses one single chip with Kickstart 3.1, boot anims and cdrom control, v40.60.
The A3000/A3000T uses two chips unique for the A3000/A3000T, Kickstart 3.1 v40.68.
The A4000D uses two chips unique for the A4000D, Kickstart 3.1 v40.68.
The A4000T uses two chips unique for the A4000T, Kickstart 3.1 v40.70.
The walker is said to have used Kickstart 3.2

-Paul