I'm curious if knowing cousins is more likely if the amount of children is smaller. Such as on my mothers side families often consist of 4-7 children for each

I'm curious if knowing cousins is more likely if the amount of children is smaller. Such as on my mothers side families often consist of 4-7 children for each couple, like my mom is one of six, and I don't really know any 3rd or even 2nd cousins; however on my fathers side families usually consist of 1-3 children and I actually know almost all my 2nd cousins and some 3rd cousins. This may be a little off topic considering the subject is on dna relations though.