Who is considered family for an Italian investor visa?

I am an investor from Asia who is interested in immigrating to Italy by investing in a scientific research endeavor. I have a large family of parents, in-laws, children and some siblings. We share the same household. Who is eligible to immigrate with me?

Answers

On Alessia Ajelli answered:

Spouse and children younger than 18 can obtain family visas. Your parents can obtain family visas only if you are the only son and you prove that they are financially dependent on you or they are seriously impaired (and their inability is proved by medical certificates).

On Marco Mazzeschi answered:

Spouse and children younger than 18 can obtain family visas. Your parents can obtain family visas only if you are the only son and you prove that they are financially dependent on you or they are seriously impaired (and their inability is proved by medical certificates).

On Andrea Parisi answered:

Spouse and children younger than 18 can obtain family visas. Your parents can obtain family visas only if you are the only son and you prove that they are financially dependent on you or they are seriously impaired (and their inability is proved by medical certificates).

On Carlo Umberto Rossi answered:

Spouse and children younger than 18 can obtain family visas. Your parents can obtain family visas only if you are the only son and you prove that they are financially dependent on you or they are seriously impaired (and their inability is proved by medical certificates).