I want the full match text comes first than their prefixes than their substrings results

Suppose If I am searching for Rohan Roy, I want Rohan Roy matching results comes first then rohan , rohan chohan etc....

The query I have used :

{
  "size": 1000,
  "query": {
    "bool": {
      "must": [
        {
          "terms": {
            "EntityType": ["entity1","entity2"]
          }
        },
        {
          "multi_match": {
            "query": "Rohan Roy",
            "type": "most_fields",
            "fields": [
             "EntityType", "Title",
"Title._2gram","Title._3gram","Title._index_prefix",    
 "Description","Description._2gram","Description._3gram","Description._index_prefix",
 "Name","Name._2gram","Name._3gram","Name._index_prefix"
 "Tags","Tags._2gram","Tags._3gram","Tags._index_prefix",                      
            ],
         
            "fuzziness": "AUTO"
          }
        }
      ]
    }
  }
}

I am searching on 2 indices.
Index1 document fields: EntityType, Title, Description
Index2 document fields: EntityType, Name, Tags

where EntityType is a keyword field and all are search-as-you-type fields.