So we do have a "Find People" option which you can find at the top right hand corner of your table. This will search for people from the companies listed on your current table.
What you can do is add as many filters as you feel will help you with your search, such as Job Titles, Work experience, and Keywords. You can also set a limit on how many people you want from each company and exclude certain job titles if you want.
And once you add the filters you want you can preview the list and then make adjustments before creating a table.
From here you can then go about further enriching people.