直接抽出するのは難しいのでApexバッチで取引先責任者にマークをつけて、あとはレポートで対応することとします。
I would like to export contacts with notes
public class BAT_findNote_Contact implements Database.Batchable<sObject> {
    
    // *******************************************************************************************
    //    
    // BAT_findNote_Contact bat  = new BAT_findNote_Contact();
    // ID jobId = Database.executeBatch(bat);                                 
    //                                                                                
    // ********************************************************************************************
    
    public Database.QueryLocator start(Database.BatchableContext BC) {
        // collect the batches of records or objects to be passed to execute
        
        String query = 'Select Id From Contact WHERE isNote__c =False ';
        System.debug('******** query ' + query);
        return Database.getQueryLocator(query);
    }
    
    public void execute(Database.BatchableContext BC, List<Contact> conList) {
        
        System.debug('******** comList ' + conList);
        Set<Id> ConIdSet = new Set<Id>();
        for (Contact c : conList ){
            ConIdSet.add(c.Id);
        }
        system.debug('### ConIdSet ############ ----> '+ ConIdSet.size() );    
        
        List<ContentDocumentLink> CDLList = [SELECT Id,LinkedEntityId FROM ContentDocumentLink WHERE LinkedEntityId =: ConIdSet ];
		system.debug('### CDLList ############ ----> '+ CDLList.size() );                 
        List<Contact> updateContactList = new List<Contact>();    
        
        for (ContentDocumentLink CDL : CDLList ){
            Contact con = new Contact();
            con.Id = CDL.LinkedEntityId;
            con.isNote__c = True;
            updateContactList.add(con);
        }
        
        try {       
            
            system.debug('### updateContactList ############ ----> '+ updateContactList.size() );                 
            if(updateContactList.size() > 0) update updateContactList;
            
        } catch(Exception e) {
            System.debug(e);
        }
        
    }
    
    public void finish(Database.BatchableContext BC) {
    }
}