I haven't seen any evidence through searching of either existing. I think it is plausible M/14 Could exist, perhaps a PEGI 12/16 game could hold this rating. I don't believe M/A does exist - but I'll keep searching to try and find it. I don't want to add any information that cannot be confirmed if possible.
Additionally since the rating list is being talked about where would an item like
https://www.ebay.it/itm/254948635319 fall? The item is not Finnish but holds a PEGI 15 rating