Currently this one is working well, and you can customize other options if needed:

Filter = {
    "Dimensions": {
        "Key": "RECORD_TYPE",
        "Values": ["Usage", "Refund", "Tax"], # "Credit" is excluded
        "MatchOptions": ["EQUALS"]
    }
}

By the way, once you have your plot in the AWS Cost Explorer, you can open the "Amazon Q" chat engine and type something like:

Please what is the API query for this page (group by linked account, but excluding credit payment type) ?