JSFiddle - React, Tailwind, and code Playground
HTML
<table><tr>
<td class="clusterList">Cluster1<input type="checkbox" checked="checked"></td>
<td class="clusterList">Cluster2<input type="checkbox"></td>
<td class="clusterList">Cluster3<input type="checkbox" checked="checked"></td>
</tr></table>
JavaScript
var listCluster = $('table td').has('input[type=checkbox]:checked').map(function(){
return this.textContent || this.innerText;
// return $.trim( $(this).text() );
}).get();
console.log(listCluster)