All Peugeot / Citroen / DS with Prince engine (1.6 THP) come with:
1. Automatic gearbox - AL4, AT6, EAT6 (revised AT6),
2. Semi automatic gearbox - EGS
3. Manual gearbox.
AM6 gearbox (which is Aisin AW's TF-80SC) come with diesel-engine Peugeot / Citroen / DS.
But not for all diesel-engine models.
Some diesel-engine models come with AT6 gearbox, manual gearbox and maybe EGS too.
Probably, some V6 petrol-engine models (e.g. Citroen C5 II) might get the AM6 gearbox.
AM6 - higher torque limit, slow gear change.
AT6 - lower torque limit, fast gear change
EAT6 - lower torque limit, faster gear gear change