Ftm wondering how many words is normal for 14 months?

So I see wayyyy different numbers online anywhere from 5-75 depending on the country! How many words did yours have at 14-15 months or what is considered good speech development? My kid has 15 words now at nearly 14 months but they aren’t all super clear pronunciation and weirdly he doesn’t have any that start with “b” yet even though that’s a first one for many.