Which prokaryotes would one expect to be found in the chimney-vent fluids of Lost City?

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Lost City is a hydrothermal vent system characterized by high temperatures and low pH levels. Methanogens are known to thrive in such extreme conditions and are often found in hydrothermal vent systems, making them the most likely prokaryotes to be found in the chimney-vent fluids of Lost City. E.coli and photosynthetic bacteria are not adapted to such extreme conditions, while aerobes require oxygen and may not be able to survive in vent fluids without it. Halophiles, which thrive in high-salt environments, are also unlikely to be found in Lost City chimney-vent fluids as the vent fluids are not typically high in salt content.

Which Prokaryotes Would One Expect to Be Found in the Chimney-Vent