Source: https://docs.arbitrum.io/for-devs/oracles/oracles-content-map
Request: we would like to add Gas Network, which supports Arbitrum One, to this list.
Gas Network
Gas Network by Blocknative is a distributed oracle platform providing real-time gas price data across blockchain. By bringing data from leading gas price data providers onchain, Gas Network is helping to drive interoperability. Gas Network supports data for over 35 chains, including Ethereum Mainnet and the Arbitrum One.
See this guide to learn how to use the Gas Oracles.