Kazakh. After the collapse of the Soviet Union, pretty much every former soviet Middle Asian state followed the same patrern with slight degrees of variation: a failed privatization, one-party regime masquerading as a democracy and an alignment with Russia in terms of geopolitics.
That being said, there are some differences:
1) Kazakhstan's government fancies itself as a secular and a democratic one, promoting rather liberal policies (in reality, though, very little is done, not to mention the fact that our politics are arguably the most stale of the bunch, with Nazarbayev being in the post since the very inception of the Republic), while also getting lucky with the abundancy of various mineral resources
2) Turkmenistan is a literal dictatorship with almost Stalin-like levels of personality cults around their "eternal president". This has changed a little since Niyazov's death in 2006, though the current state of things isnt much better.
3) Kyrgyzstan has been quite interesting politically, since it had multiple independent presidents throughout the decades of Independency, as well as an entire coup d'état in 2010. Lately, though, it seems like the Social-Democratic party has finally gotten the upper hand.
4) Uzbekistan is like Turkmenistan, only a little better. It's also incredibly densely populated and has a large diaspora in the former USSR.
5) Tajikistan is basically Uzbekistan/Turkmenistan.
I'm in no way an expert btw, and all that i've said is merely a summary of my observations.