SELECT 
  email 
FROM google_chrome_profiles 
WHERE NOT ephemeral AND email <> ''

$chromeLocalState = "$env:LOCALAPPDATA\Google\Chrome\User Data\Local State"
if (-not (Test-Path $chromeLocalState)) { exit }
$json = Get-Content $chromeLocalState -Raw | ConvertFrom-Json
$profiles = $json.profile.info_cache
foreach ($prop in $profiles.PSObject.Properties.Value) {
    $isEphemeral = $false
    if ($prop.PSObject.Properties.Name -contains "ephemeral") {
        $isEphemeral = $prop.ephemeral
    } elseif ($prop.PSObject.Properties.Name -contains "is_ephemeral") {
        $isEphemeral = $prop.is_ephemeral
    }
    $email = $prop.email
    if (-not $isEphemeral -and -not [string]::IsNullOrEmpty($email)) {
        Write-Output $email
    }
}

cat "$HOME/Library/Application Support/Google/Chrome/Local State" | jq -r '.profile.info_cache|to_entries[]|select(.value.is_ephemeral==false and .value.email != "")|.value.email'

PowerShell commands are currently work in progress, contributions welcome.

Bash commands are currently work in progress, contributions welcome.