in Suwahiqul Muhriqa…allamah ibn hajar has a hadith…and many other sunni books have the same or similar hadith where the Prophet pbuh has said that "Hizqil was the truthful one (siddique) from family of Firoun (quran 40:28), habib al Najjar from the family of Yasin (quran 36:30), and Ali ibn Abi Talib who is the most virtous amongst them (quran 9:119)
there is a hadith abt Ammar ibn Yasir being the truthful one…and his character testifies to that…
As for Abu bakr…yes he was among the companions during the life of the Prophet but was never amongst the best…he fled battlefields…and not once was he given any serious position of leadership by the prophet…infact many time very young ppl lead him in missions…unfortunately his actions changed for worse at the death of the Prophet and he was running a campaign while the Prophet (pbuh) was being washed and getting a burial…he lied and upset the glorious woman of the world to such extent that she stayed away from him for 6 months until she died… the glorious woman known as Saddiqa and Quran testifying for her purity from all forms of uncleanliness…makes one wonder that among a Siddiqa and a Sadiq who is the real deal…