Issues syncing company data between create company table and find people table in beginner database setup

Hello everyone. As a beginner, has anyone observe that the create company table and the find people table which is supposed to pull data from the domain column of the company table are basically not the same. i thought this tables are supposed to be sync because the filter identify the company table as a primary table to find people data. I am kind of stuck at this point because the find people data i generated basically has it own company column with different company name column, different from my company table. Is anyone also going through this or can help me better understand how i can generate my find people data from the company name column i already had in my company table. thank you.