Private Variable and Getter Setter Structure

public class Class1 {
    [SerializeField, Tooltip("X axis")]
    float _x;
    public float X {
        get { return _x; }
        set { _x = value; }
    }

    [SerializeField, Tooltip("Y axis")]
    float _y;
    public float Y {
        get { return _y; }
        set { _y = value; }
    }

    [SerializeField, Tooltip("Z axis")]
    float _z;
    public float Z {
        get { return _z; }
        set { _z = value; }
    }
}

public class Class2 {
    [SerializeField, Tooltip("X axis")]
    float _x;
    [SerializeField, Tooltip("Y axis")]
    float _y;
    [SerializeField, Tooltip("Z axis")]
    float _z;

    public float X {
        get { return _x; }
        set { _x = value; }
    }

    public float Y {
        get { return _y; }
        set { _y = value; }
    }

    public float Z {
        get { return _z; }
        set { _z = value; }
    }
}

public class Class3 {
    public float X {
        get { return _x; }
        set { _x = value; }
    }

    public float Y {
        get { return _y; }
        set { _y = value; }
    }

    public float Z {
        get { return _z; }
        set { _z = value; }
    }

    [SerializeField, Tooltip("X axis")]
    float _x;
    [SerializeField, Tooltip("Y axis")]
    float _y;
    [SerializeField, Tooltip("Z axis")]
    float _z;
}