No, they won't. The shahada is no guarantee of jannah. Not even the Prophet himself was guaranteed jannah .
plz see bold part of your post.
Think before you write something about prophet s.a.w. If prophet s.a.w wasn't guaranteed jannah then what is the point of this guarantee given by prophet s.a.w to momineen.
Abu Umamah Al-Bahili )May Allah be pleased with him reported:
Messenger of Allah s.a.w said,
"I guarantee a house in Jannah for one who gives up arguing, even if he is in the right; and I guarantee a home in the middle of Jannah for one who abandons lying even for the sake of fun; and I guarantee a house in the highest part of Jannah for one who has good manners."
(Riyad as-Salihin Book 1, Hadith 630, Abu Dawud)
The Prophet (PBUH) said, "Whoever guarantees me (the chastity of) what is between his legs ( i.e. his private parts), and what is between his jaws ( i.e., his tongue),
I guarantee him Paradise."
Sahih Al-Bukhari Hadith 8.799
Obadah ibn Samit (may Allah be pleased with him) narrated Allah’s Messenger (sallahu alayhi wa salim) said: “Guarantee me you’ll do six things and
I guarantee you Jannah. Whenever you speak say the truth. Fulfill your promises when you make them. When you’re entrusted with something, carry out that trust. Safeguard your private parts, lower your gaze and prevent your hands from harming others.”
(Ibn Khuzaymah (3/91), Ibn Hibban (107), Al-Hakim (4/ 358,359), Ahmed (5/323). Shaykh Al-Albani graded this hadeeth as being Hasan Lee Ghayri hi (1470) in Saheehah