The best of people after the Messenger of Allah ﷺ is Abu Bakr, and the best of people after Abu Bakr is Umar.
حدثنا علي بن محمد حدثنا وكيع حدثنا شعبة عن عمرو بن مرة عن عبد الله بن سلمة قال سمعت
خير الناس بعد رسول الله ﷺ أبو بكر وخير الناس بعد أبي بكر عمر
[Sahih]. Abdullah bin Salama's hadith is hasan. His confusion in old age did not harm the reliability of what he narrated from Amr bin Mura, as I established in my commentary on Musnad Humaydi, hadith no. 57. It has multiple routes of transmission in Bukhari and elsewhere, and it is among the mutawatir hadiths.