What would be the kind of sports bike apt for a beginner to start-off?

I'm new to riding bikes, and I've ridden cruise bikes(
I'd like to start-off my sports-bike riding. For now, my options for a beginner's sports bike are a Kawasaki Ninja 300, a Honda CBR250RR and a 600RR.

I could afford a budget around 6,000 USD to 7,000 USD.

What, according to your opinion and experience, would be a good starter sports bike for a beginner? And what kind of technical know-how and riding skills should I be needing to work on, in order to use one properly?

Thanks:)

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