Comparing WHERE-IN / WHERE-EXISTS / JOIN with an example

Suppose we are tasked to extract the information of employees whose salary is > 150000. Which among the 3 codes is the most efficient in delivering the results?

-------JOIN--------

SELECT e.*, s.salary
FROM employees e
        JOIN salaries s ON e.emp_no = s.emp_no
WHERE
    salary > 150000
GROUP BY emp_no;

-------WHERE-EXISTS--------
SELECT  *
FROM employees e
WHERE
    EXISTS( SELECT   *
        FROM salaries s
        WHERE
            e.emp_no = s.emp_no
                AND s.salary > 150000);
            

-------WHERE-IN--------
SELECT *
FROM employees e
WHERE
    e.emp_no IN (SELECT 
            s.emp_no
        FROM salaries s
        WHERE
            s.salary > 150000);

Is it also correct to say that only the JOIN statement can return columns from both tables, whereas the WHERE-IN and WHERE-EXISTS subqueries can only return columns from the outer query?