Peace hareem01
Yes, all Sunni schools use reason to some degree, but the primary authority is tradition - i.e. the text, even when it betrays our rationale, but Shi’ahs more often than not class such texts as unauthentic because of this fact.
Even amongst Sunnis some groups are very dogmatic and others are very rational, but Shi’ahs tend to be moreso than Sunnis.
The idea is to strike a balance between text and reason and this balance is determined by the tools of authenticity that we have and at some point we need to employ taqleed, it is a fact that Deobandi hanafis employ significantly less taqleed than Barelvi hanafis for example.
Taqleed is not ‘blind faith’ rather it is entrusted fellowship to a scholar who is chosen for his sublime traits and character, which is easy to see even for the layman.