Can I use valid US B1/B2 visa to transit in NY & LA?

Can I use valid US B1/B2 visa to transit in NY & LA? - Black worker with smartphone waiting for subway at metro station

My nationality is Vietnamese and I have a flight heading to Vietnam. I have to transit in New York, Los Angeles, and Shanghai on the way (each will be just max 5 hours). Can I use my valid US B1/B2 visa for transit through those two American cities? What about Shanghai; do I need the transit visa for there also?

visas usa transit shanghai vietnamese-citizens

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Can I use valid US B1/B2 visa to transit in NY & LA? - Focused African American female wearing casual outfit and protective mask standing on New York underground platform with takeaway coffee and using mobile phone

Can I use valid US B1/B2 visa to transit in NY & LA? - Focused black woman using smartphone on metro platform

Can I use valid US B1/B2 visa to transit in NY & LA? - Public railway station with clock in center

US Visa - Tips To Get Your B1/B2 Visa Approved

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Images: Ketut Subiyanto, Uriel Mont, Uriel Mont, Charlotte May