erpsaas/app/Enums/Template.php

<?php

namespace App\Enums;

use Filament\Support\Contracts\HasLabel;

enum Template: string implements HasLabel
{
    case Default = 'default';
    case Modern = 'modern';
    case Classic = 'classic';

    public const DEFAULT = self::Default->value;

    public function getLabel(): ?string
    {
        return $this->name;
    }
}