Here’s a randomly generated cipher of unknown type. All my ID tests put correct type on top. I needed the crib to solve it. Both hill-climber and key search got practical solutions. Finished off a few letters by hand.
NOYTA ZYYLJ GUQUU YAIRU LAFWK TWOGF TGGXF FSCWG BKEIH HVBTI LCBUJ
UOYAL KSXTA KLGJV BQOGL DSQKC IEGZO FKNGU JGLJG BJCWU MUNMU TKZYY
DYAHN CDMFA PIUXB MCUNY AZJMH WDRFK YGQXH SMWQQ HBYMG UVGLH FFNPY
LPMEH BIWUI IGXBS JGHZB U.
Caesar-shifted crib: WYJWUFXYYJSYWFNS