MaterialUI Radio buttons with Formik - value not set onSubmit

Question

I have a formik form in react using MaterialUI, and all of the controls are passing their values onsubmit except the radio button group.

Here's my setup, am I missing an attribute formik needs or have something out of place? It seems to match examples I see elsewhere. There is no validation schema for this field at the moment.

const formik = useFormik({
            initialValues: {
                email: '',
                packageType: '',
            },
            validationSchema: validationSchema,
            onSubmit: (values) => {
                sendRequestEmail(values);
            },
        });

<FormControl component="fieldset">
                            <RadioGroup
                                aria-label="Package type"
                                name="packageType"   
                                defaultValue="Basic Package"
                                onChange={formik.handleChange}                   
                            >
                                {data.strapiPricingPage.cookie_types.map((item) => (
                                    <FormControlLabel key={item.CookieType} value={item.CookieType} control={<Radio />} label={item.CookieType} />                            
                                ))}
                            </RadioGroup>
                        </FormControl>

Answer 1

Apparently it needs to be at the line item level and not in RadioGroup where the examples show it being:

<FormControl component="fieldset">
                            <RadioGroup
                                aria-label="Package type"
                                // name="packageType"   
                                defaultValue="Basic Package"
                                //onChange={formik.handleChange}                   
                            >
                                {data.strapiPricingPage.cookie_types.map((item) => (
                                    <FormControlLabel onChange={formik.handleChange} name="packageType" key={item.CookieType} value={item.CookieType} control={<Radio />} label={item.CookieType} />                            
                                ))}
                            </RadioGroup>
                        </FormControl>