You can find competitor lists in several resources including:

• D&B Hoovers. - Search for your company of interest, then find the Competitors section of the company profile.
• Factiva - Provides peer comparisons under the Company tab. Search by company name or ticker.
• PitchBook - See the Similar Companies section on a company's profile which also has the option to Explore Competitive Landscape.
• Capital IQ, (see access details), also includes competitors on company profiles under Peer Analysis.
• LSEG Workspace - See the options under Peers & Valuation from a company's record.
• Bloomberg (see access details) 
  • Type in a ticker symbol and click the <Equity> key.
  • Type RV and press <GO>.