from typing import Any

UNSET = object()

def recursive_merge(*dictionaries: dict | None) -> dict:

    """Merge multiple dictionaries recursively.

    Later dictionaries take precedence over earlier ones.

    Nested dictionaries are merged recursively.

    UNSET values are skipped.

    """

    if not dictionaries:

        return {}

    result: dict[str, Any] = {}

    for d in dictionaries:

        if d is None:

            continue

        for key, value in d.items():

            if value is UNSET:

                continue

            if key in result and isinstance(result[key], dict) and isinstance(value, dict):

                result[key] = recursive_merge(result[key], value)

            else:

                result[key] = value

    return result