The treatment of a spouse and children is governed by the program's own published terms, which should be read directly rather than assumed from other categories. Do not carry across the derivative rules from EB-5 or the dependant rules from TN, L or E, since those belong to different frameworks.
Read the family terms as part of the price
Families evaluating any route should list each member and ask three questions: what status would this person hold, what would it permit them to do, and when would it end. For a program whose terms are recent, those answers must come from the official materials, and where the materials do not address a family situation the household should treat that as an open question to be resolved before payment rather than after. Consider also what the household wants that a status alone does not deliver: schooling arrangements, a spouse's ability to work, professional licensing in a particular state, and the practical question of where the family will actually live.
A payment that secures a status without answering those questions has not solved the problem the family started with. Hypothetical example: an independent-film distributor wants to make the payment while her spouse and adult son expect to relocate with her. The household must not assume that one payment answers each person's immigration position.
Prepare a family chart with marital status, ages, documents, and the official treatment of relatives under the current framework. A first review should identify which family member needs a separate route. The usual failure is planning housing, work, or school around an assumed derivative benefit before the controlling official terms have been confirmed for that person.