Create 2 Record Types within 1 single json

Hi everyone.

I have a json providing by a WebService like this :

[
{
"id": 1,
"title": "Essence Mascara Lash Princess",
"reviews":
[
{
"rating": 2,
"reviewerEmail": "john.doe@x.dummyjson.com"
},
{
"rating": 2,
"reviewerEmail": "nolan.gonzalez@x.dummyjson.com"
},
{
"rating": 5,
"reviewerEmail": "scarlett.wright@x.dummyjson.com"
}
],
"returnPolicy": "30 days return policy"
},
{
"id": 2,
"title": "Eyeshadow Palette with Mirror",
"reviews":
[
{
"rating": 4,
"reviewerEmail": "liam.garcia@x.dummyjson.com"
},
{
"rating": 1,
"reviewerEmail": "nora.russell@x.dummyjson.com"
},
{
"rating": 5,
"reviewerEmail": "elena.baker@x.dummyjson.com"
}
],
"returnPolicy": "30 days return policy"
}
]

I want to create a Record Type for the fields of the first level: id, title, returnPolicy

After that I want to create another Record Type for the fields of the second level of field "reviews" adding the id field of the first level to link both Record Types: id (belonging to the first level fields) , rating, reviewerEmail

Moreover, the sync has to work for these two RecordsType. The question is: Can I create these two Record Type calling the same WebService or I need one with the first level fields an another to the second level fields to create separately the two Record Types?

Thanks in advance!