Inconsistent blockchain names on volume endpoints for DEXes and Derivatives

[JoaoVasques]

Context

I am using the folllowing endpoints to pull data for volume

1. DEXes - https://api.llama.fi/overview/dexs?excludeTotalDataChart=true&excludeTotalDataChartBreakdown=true&dataType=dailyVolume
2. Derivatives - https://api.llama.fi/overview/derivatives?excludeTotalDataChart=true&excludeTotalDataChartBreakdown=true

Problem

Inside each protocol that contains the volume data there are two fields I am using. One is chains to get the list of available blockchains, the other is breakdown24h. I have noticed that some names in chains don't have a direct mapping (even using lower casing) to their counterparts in breakdown24h. The following image shows and example for the opBNB chain

I have also detect some additional inconsistencies that I am sharing in the following mapping

    mapping = {
        "opBNB": "op_bnb",
        "Gnosis": "xdai",
        "ZKsync Era": "era",
        "Cronos zkEVM": "cronos_zkevm",
        "Polygon zkEVM": "polygon zkevm",
        "X Layer": "xlayer",
        "Avalanche": "avax",
        "ZetaChain": "zeta",
    }

Questions

1. Why does this inconsistency exists?
2. Is there any endpoint that I can use to resolve them?

Thank you