Roblox Catalog API; Do it carry all of roblox catalog items?

So, I was using this Roblox Catalog API that I had gotten from the roblox wiki (www.roblox.com/catalog/json) but I have am not sure as to..

1. Having all of the items in the roblox catalog?

2. I have seen someone on YT do this, and they somehow sorted the page out? Making the code neater? Simliar as to..

{"AssetId": 66747327,
"Name": "Cuter Fox",
"Url": "/Cuter-Fox-item?id=66747327",
"PriceInRobux": "50",
"Updated": "4 months ago",
"Favorited": "0 times",
"Sales": "0",
"Remaining": "",
"Creator": "Roblox",
"CreatorUrl": "/User.aspx?ID=1",
"PrivateSales": "",
"PriceView": 2,
"BestPrice": "",
"ContentRatingTypeID": 0,
"AssetTypeID": 8,
"CreatorID": 1,
"CreatedDate": "\/Date(1322616958803)\/",
"UpdatedDate": "\/Date(1322701833910)\/",
"IsForSale": true,
"IsPublicDomain": false,
"IsLimited": false,
"IsLimitedUnique": false,
"MinimumMembershipLevel": 1}

And not..

[{"AssetId":2409285794,"Name":"Playful Vampire","Description":"But first, let me take a skellfie, because I look so good its scary.","AbsoluteUrl":"https://www.roblox.com/catalog/2409285794/Playful-Vampire","Price":"75","Updated":"1 day ago","Favorited":"5,343 times","Sales":"20,000","Remaining":"0","Creator":"ROBLOX","CreatorAbsoluteUrl":"https://www.roblox.com/users/1/profile","PrivateSales":"755 Private Sellers","PriceView":1,"BestPrice":"3,997","ContentRatingTypeID":0,"IsServerSideThumbnailLookupInCatalogEnabled":true,"AudioUrl":null,"IsLargeItem":false,"IsThumbnailFinal":true,"IsThumbnailUnapproved":false,"ThumbnailUrl":"https://t0.rbxcdn.com/da18f13cef9e0b39ba0c966588a45f3b","BcOverlayUrl":null,"LimitedOverlayUrl":"https://images.rbxcdn.com/d649b9c54a08dcfa76131d123e7d8acc.png","DeadlineOverlayUrl":null,"LimitedAltText":"Limited Unique","NewOverlayUrl":"https://images.rbxcdn.com/b84cdb8c0e7c6cbe58e91397f91b8be8.png","SaleOverlayUrl":null,"IosOverlayUrl":null,"XboxOverlayUrl":null,"GooglePlayOverlayUrl":null,"AmazonOverlayUrl":null,"IsTransparentBackground":false,"AssetTypeID":18,"CreatorID":1,"CreatedDate":"\/Date(1538070416133)\/","UpdatedDate":"\/Date(1538254800967)\/","IsForSale":true,"IsPublicDomain":false,"IsLimited":false,"IsLimitedUnique":true,"MinimumMembershipLevel":0,"OffSaleDeadline":null,"ProductId":392984560}

If so how would I do this? Do this JSON really carry ALL of roblox catalog items?

Thanks in advanced if you could help me!