You might try the notes at the end of this post. https://kentgraziano.com/2013/01/14/tech-tip-connect-to-sql-server-using-oracle-sql-developer/
it is a bit dated and I have no way to test but hopefully it helps.
You should add only one jar file - they are 3 but if pay some attention they are for different Java versions - use mssql-jdbc-8.2.2.jre8.jar
Otherwise I don't have problem to connect with "Microsoft SQL Server JDBC Driver 3.0 "