Yes it is. USCIS explicitly says Hep B and not A, yes. But USCIS states "Any other vaccine-preventable diseases recommended by the Advisory Committee for Immunization Practices (ACIP)."
And as of now, Hep A is required by the CDC.
Link: https://www.cdc.gov/immigrantrefugeehealth/laws-regs/vaccination-immigration/revised-vaccination-immigration-faq.html