JSFiddle - React, Tailwind, and code Playground

HTML

<button id="unqOrMsgTestFire">Check rows for redundancy</button>

<hr/>
    <p class="unique">Unique</p>|<p class="notUnique">Not Unique</p>
<hr/>

<table id="binning">
    <thead>
        <tr>
            <th>Server</th>
            <th>Channel</th>
            <th>Bin Type</th>
            <th>Bin Name</th>
            <th>Population</th>
            <th>Check</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td col="server" >Server 1</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td col="name" >cat</td>
            <td col="ndocs" >15</td>
            <td col="check" rowid="animalcat" ></td>
        </tr>
        <tr>
            <td col="server" >Server 2</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td col="name" >cat</td>
            <td col="ndocs" >12</td>
            <td col="check" rowid="animalcat" ></td>
        </tr>
        <tr>
            <td col="server" >Server 1</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td col="name" >dog</td>
            <td col="ndocs" >12</td>
            <td col="check" rowid="animaldog" ></td>
        </tr>   
        <tr>
            <td col="server" >Server 1</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td col="name" >dog</td>
            <td col="ndocs" >12</td>
            <td col="check" rowid="animaldog" ></td>
        </tr>  
        <tr>
            <td col="server" >Server 1</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td col="name" >dog</td>
            <td col="ndocs" >12</td>
            <td col="check" rowid="animaldog" ></td>
        </tr>  
        <tr>
            <td col="server" >Server 1</td>
            <td col="channel" >Channel A</td>
            <td col="type" >animal</td>
            <td...

CSS

/* css is irrelevant here this is just for clarity! */

#binning tbody{
    color:#606060;
}

#binning td, th {
    padding:4px;
    border: 1px solid black;
}

.notUnique {
    color: #d90000;
}

.unique {
    color: #758811;
}

p {
    display:inline;
}

JavaScript

$(document).ready(function(){ //this is just to fire the function
    $("#unqOrMsgTestFire").click(function(){
        unqOrMsgTest();
    });
});
    
function unqOrMsgTest() { 
    var rows = $("#binning tbody").children('tr');
    var totalRows = rows.length;
    var idLookup = {};
    var i, rowId, resultClass, checkColumn, rowCount, row;
    
    // loops through all rows, convert to jQuery objects and track the IDs
    for (i = 0; i < totalRows; i++)
    {
        row = $(rows[i]);
        rowId = row.children('td[col="check"]').attr("rowid");
        rows[i] = row;
        
        idLookup[rowId] = (rowId in idLookup) ? idLookup[rowId] + 1 : 1;
    }
    
    // loop through each row and check them for redundancy
    for (var i = 0; i < totalRows; i++ )
    {
        // grab row identifer to check against the id lookup
        row = rows[i];
        checkColumn = row.children('td[col="check"]');
        rowId = checkColumn.attr("rowid");     
        
        //this bit of logic picks a class to assign rows        
        rowCount = idLookup[rowId];
        resultClass = rowCount < 2 ? "unique" : "notUnique";
        
        //apply the row class and print the redundancy number into td
        checkColumn.text(rowCount);
        row.attr("class", resultClass);        
    };            
}