Unlike Android, other technologies, like e.g. server technologies, each have their own name. For example, take a look here:
https://www.itjobswatch.co.uk/jobs/uk/kotlin.do
Scroll down to “Co-occurring IT Skills”, Android occupies I believe 40%-50% (they are not mutually exclusive), and if you scroll further down you’ll see Apache Spark and ElasticSearch, and HTTP and what not. Each has may be single-digit %, but cumulatively they would add up. I didn’t do the complete math, but I strongly believe Android is not the only thing on Kotlin Job Market.