Mine says dada when she's happy and mama when she's angry 😅
My 9 month old says mama but only to his dad
My LG has the same vocabulary I think it’s just the constant and vowels she’s picked up first x
My little boy babbles so much and makes sounds that sound like daddad and mum but they are never in relation to us just noises he's learnt.
My twins sing dada dada all day long not once I heard mama 😂
At 10 months old those are not real words, it’s just babbling (and it’s lovely ofc). Developmentally saying words with meaning comes later so I wouldn’t worry if I were you! My 9 month old says mama-mamma all the time but the paediatrician says I can’t claim it as first word haha 😁