Language doesn't mean that this is on 5th positon is bad or language is at 1st position is the best language. It's just the classification and giving them the number's. Have a look on top five programming languages
Python is a super powerful language and the number one language just because of Machine Learning. If we talk about any big companies like Google, Facebook or startups their engineers have a thorough knowledge about Python. If some want to implement ML anyhow into their product must have a great understanding of this language to grow up.
For the increase in demand of android developers and android apps this language is insanely used. For becoming an android developer Java is a great start. Java can run on many different operating systems.
Swift is a programming language just to go inside apple ecosystem. Apple is a big deal it sells insanely crazy high amount of devices every single year, regardless whatever the prices or whatever the highest quality they are building up, they actually sell the product.
If someone going to design an app which includes any kind of apple ecosystems so swift is here to go inside to any apple ecosystem but apple device is mandate which creates huddle because everyone can't afford apple device. But now markets are extremely huge and hype in jobs that's why apple made it to the list.
C# (C Sharp) is a simple, modern, general purpose, object oriented programming language developed by Microsoft. Language is popular for games and the people who are in dot net market.
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