The US Visas have around 185 categories. The 2 main categories are:
Non-immigrant Visa:
It is for provisional visits like studying, visiting family, work, business, or tourism.
Immigrant Visa:
It is for individuals to immigrate to the US. This US Visa holder is processed for I-551 or Permanent Resident Card also known as the Green Card at the port of entry. It serves a san provisional I-551 as evidence for Permanent Residence for 1 year upon being endorsed through a CBP admission stamp.
A child with IH-3 or IR-3 Visa will become a US citizen automatically upon admission to the US. The N-560 or Citizenship Certificate will then be processed for the child.