Google Sheets Script, how to create a NEW loose object of a sheet tab - object

Question

I can't find the answer but it might be that I'm looking for the wrong things.
I got a sheet that got tabs for every letter in the alphabet and those includes data beginning
on that letter. I now want to copy those line into a summary sheet but before I just copy it
I need to remove the first line from every tab as that is the heading, the heading should not
appear over and over down all the lines in the new summary tab.
If I just do a variable of a tab and remove the first line, like:
var sheets = ss.getSheetByName(tabs[i]);, this will reflect into the tab itself
and that is wrong as the heading is now gone in that tab and that I can understand as it is not
a new object but a referencing variable.
I tried to create a new object like: var sheets = new Object(ss.getSheetByName(tabs[i]));
and then change that figuring it wouldn't touch the tab itself as this is now not a reference object
but it seems it is, as changing the 'sheets' variable still changes the original data in that tab.
I hope that makes it clear.
How can I create a new object of that tab and is NOT a reference but a COPY of it so I can do
whatever I want to that object without changing the original data in the tab it came from.

Answer 1

Perhaps something like this might work:
function summaryAZ() {
const sA=['A','B','C'];//etc
const ss=SpreadsheetApp.getActive();
const sumsh=ss.getSheetByName('Summary')
sumsh.getRange(2,1,sumsh.getLastRow()-1,sumsh.getLastColumn()).clearContent();//clear everything except header row
sA.forEach((n,i)=>{
let sh=ss.getSheetByName(n);
let [hA, ...data]=sh.getDataRange();
sumsh.getRange(sumsh.getLastRow()+1,1,data.length,data[0].length).setValues(data);
});
}