It keep pondering on my mind in asking why are some seed phrase being generated on different number range and why is 12 and 24 the most common numbers of seed phrase.
12 is actually the most common. 128 bits of of entropy is sufficient security to protect against any sort of breach, so most wallets use a 12 word seedphrase above all the other options.
24 words being used by sone might be to give the perception of a higher level of security to encourage more people to use their wallets.