Lesser-known

It's those lesser-known boxers you gotta watch out for.

Source: wiktionary

To celebrate the centenary next month of the opening of the first section (Forest Gate to Tilbury) of the former London, Tilbury & Southend Railway, the Stephenson Locomotive Society is organising a special rail tour over that route and other lesser-known L.T.S.R. lines.

Source: wiktionary

In Berlin, however, there is a handful of 'proper' ghost stations that can still be uncovered and observed, if not always visited. They constitute one of the German capital's lesser-known Cold War features, the so-called Geisterbahnhoffe^([sic]).

Source: wiktionary