The best of this ummah after its Prophet ﷺ is Abu Bakr, the best of it after Abu Bakr is ʿUmar; and if I wanted, I could name the third one.
أَنَّهُ قَالَ خَيْرُ هَذِهِ الْأُمَّةِ بَعْدَ نَبِيِّهَا أَبُو بَكْرٍ وَخَيْرُهَا بَعْدَ أَبِي بَكْرٍ عُمَرُ وَلَوْ شِئْتُ سَمَّيْتُ الثَّالِثَ