I understand companies like Tata have job-titles like “Account executive” for (relatively) low-level employees which meets the “Executive-level employment” critter and rule for EB-1 classification - even though the term “executive” is clearly overloaded and inappropriate in this context.

USCIS aren't fooled by job title inflation. Applications for these sorts of visas require substantial supporting documentation - typically org charts, detailed descriptions of responsibilities, resumes of people who report to the visa applicant, evidence of compensation commensurate with the claimed responsibilities, etc.