#propably

Written language

Old Cybertronian was written in runes that were clawed or carved (handy before the invention of paints and brushes)

Modern and semi-modern Cybertronian can be painted with a brush, similiar to how Asian languages traditionally were (Transformers Prime episode "T.M.I" had Bulkhead paint sigils with a mop as a brush)

Cybertronian has alphabet like in cyrillic, as opposed to symbols being words like in japanese (makes more sense at least for modern Cybertronian as it's mostly typed on devices)

Vocalized language

Cybertronians all have some sort of engines, and aside from running their internal organs, the engine is also used for vocal communication

They can growl and purr like canines and felines, and might also be able to screech

Might also be able to make more mechanical noises, like whirring wheels and grinding gears?

Sign language/body language

I think most of them had four or five fingers, so humanlike sign language is possible. It's much more widespread among abled Cybertronians than sign language is among abled humans.

Wings, doorwings, and winglets are used to emote; for example they stand up, droop, flutter, and spread in threat display (there's one problem with this hc; many of them don't have any of these)

Finials express similiarly to cat and dog ears (again a problem with the hc; many Cybertronians do not have finials)