At the top of your checker entry, does it just say “on Exchange NAMEOFEXCHANGE” or does it say “on Exchange NAMEOFEXCHANGE is served by Cabinet XXX”? If its the former, your line doesn’t use a cabinet and is connected all the way to the exchange directly, but other houses might well have been connected to the cabinet at build or they are served from a different distribution route that your property doesn’t use when your line was set up.
sadly thats no consolation as it means you will not get VDSL service, since Openreach have basically abandoned the idea of adding new cabinets or conducting line rearrangements.