How to use Json schema to validate mandatory and optional objects in an array

please I have a question with regards to json schema. I have a complex model that I am trying to build a schema for in JSON so that I can validate each model created. The condition for a valid model are as follows

1. in the Json document, there is an array(ArrayElement) which contains list of objects. some of these objects are mandatory while some are not.

2. for the mandatory objects, the minimum and maximum number must be two(since they are mandatory), they must also be unique, some keys in the object must have diiferent value.

3. for the optional objects, the maximum occurence must be 4, they must also be unique, some keys in the object must have different value. The occurrence of the optional object in the array can be 0.

4. if all objects are provided in the array, that means the maximum objects in that arraay should not be more that 6.

5. no additional object(with another schema) should be allowed except the schema of the two mandatory and optional objects.

6. no additional Properties should also be allowed in these two objects.

With these conditions, I wrote the following schema to reflect what I am trying to achieve.

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "ArrayElements": {
        "anyOf": [
          {"contains":{
            "properties": {
              "id" : {
                "type" : "string",
                "enum": ["title", "created", "support", "modified"]
              },
              "modelType" : {
                "type": "string",
                "enum": ["Property", "Range", "File"]
              }
            },
            "additionalProperties": false,
            "required": ["id", "modelType"]
          },
            "maxContains": 4,
            "uniqueItems": true
          },
        
          {"contains": {
            "properties": {
              "name": {
                  "type" : "string",
                  "enum": ["Name1","Name2"]
              },
              "modelType": {
                "type" : "string",
                "enum": ["coll"]
            },
              "email" : {
                  "type": "string"
              }
          },
          "additionalProperties": false,
          "required": ["name", "email", "modelType"]
          }, 
          "minContains" : 2,
          "maxContains": 2,
          "uniqueItems": true
          }

        ]
      },
    "modelType": {
      "const": "exampleModelType"
    }
    },
  
  "required": ["modelType"]
    
}

My expected results are as follows:

{
    "ArrayElements":[
    {
        "name" : "Name1",
        "email" : "Hallo",
        "modelType": "coll"
    },

    {
        "name" : "Name2",
        "email" : "Hallo",
        "modelType": "coll"
    }
    ],
    "modelType": "exampleModelType"
}

Should be valid(They represent the mandatory schema) but it not valid

{
    "ArrayElements":[
    {
        "name" : "Name1",
        "email" : "Hallo",
        "modelType": "coll"
    },

    {
        "name" : "Name2",
        "email" : "Hallo",
        "modelType": "coll"
    },
    {   
        "id" : "title",
        "modelType" : "File"
    }
    ],
    "modelType": "exampleModelType"
}

This is valid.

{
    "ArrayElements":[
    {
        "name" : "Name3",
        "email" : "Hallo",
        "modelType": "coll"
    },

    {
        "name" : "Name4",
        "email" : "Hallo",
        "modelType": "coll"
    },
    {   
        "id" : "title",
        "modelType" : "File"
    }
    ],
    "modelType": "exampleModelType"
}

Should be invalid(because Name3 and Name4 are not in the enum values) but it is valid

{
    "ArrayElements":[
    {
        "name" : "Name1",
        "email" : "Hallo",
        "modelType": "coll"
    },

    {
        "name" : "Name2",
        "email" : "Hallo",
        "modelType": "coll"
    },
    {   
        "id" : "title",
        "modelType" : "File"
    },
    {   
        "underfinedKey" : "title",
        "anotherUndefinedKey" : "Hallo"
    }
    ],
    "modelType": "exampleModelType"
}

THis should be invalid because the last object is not a schema that was defined.