esa
Member
I don't think you could just put family members as the factor that takes longer. The delay is for background checks, but a selectee with 3 kids under 10 won't have much to do, as opposed to a a family with two kids at 18 & 20. Those older kids will cause more checks.
Now the other factor will be where the applicants are from or where they have lived. So a family from the UK that have never been anywhere else would take less time than a family from a country that doesn't cooperate with the USA as we'll in terms of sharing information. And if the family list addresses from other countries, then those countries will be checked too.
So, these things are no predictable, they are depending on too many factors to predict the time needed for processing.
Flori and I was just making some conversations about the spreadsheets TR & EU . We were discussing both . We both agree with you. Just trying the times go faster to the next monts 2nd letters.