Script to launch browser - Access other browsers (then MSIE) as comboject

I'm a newbe in PowerShell, so forgive me my ignorance. We discovered a PS script to measure the load time of SharePoint pages (Intranet home & other main pages). The script actually launches a browser (MSIE11 in particular) and records the time to fully load a page (stored within SP site collection).

The script instantiates a new object using -comobject. The script contained an example of how to instantiate and start MSIE, yet we would like to measure also load performance using other browsers (Chrome, Edge, FireFox, Safari, Opera, ...).

Is that possible and what would the corresponding value for -comobject?

Find below extract o/t script (bold-italic line > $ie = New-Object -comobject "InternetExplorer.Application" is the one to instantiate MSIE)

$urls = "https://contoso.sharepoint.com/", "https://contoso.sharepoint.com/Sites/newContoso"

$array = @()
$tim = Get-Date
write-host $tim

while($tim -lt $endDate)
{
# write-host "loop1"
foreach($url in $urls)
{
# write-host "loop2"
$ie = New-Object -comobject "InternetExplorer.Application"
$ie.visible = $true
$timein = Get-Date
$ie.navigate($url)

while ($ie.Busy -eq $true -or $ie.ReadyState -ne 4 -or $ie.document.IHTMLDocument3_getElementByID("O365_MainLink_Settings").readystate -ne "complete")