Here's the 9 songs by MEGADETH that appeared in the 2024 countdown:
YOUTHANASIA

A TOUT LE MONDE

MEGADETH

YOUTHANASIA 1994 4:22
2024: 776 2023: 1007 2022: 1167 2021: 1592 2020: 1344 Average: 1177
CRYPTIC

ALMOST HONEST

MEGADETH

CRYPTIC WRITINGS 1997 4:08
2024: 1933 2023: 1927 2022: 1325 2021: 1730 2020: 1799 2019: 1099 2018: 1246 2017: 1314 2016: 710 2015: 601 2014: 870 2013: 248 2012: 322 2011: 628 2006: 946 2005: 985 2004: 944 2003: 844 Average: 1082
RUST

HANGAR 18

MEGADETH

RUST IN PEACE 1990 5:11
2024: 1080 2023: 1657 2022: 971 2021: 961 2020: 504 2019: 467 2018: 837 Average: 925
RUST

HOLY WARS ...THE PUNISHMENT DUE

MEGADETH

RUST IN PEACE 1990 6:32
2024: 301 2023: 188 2022: 180 2021: 141 2020: 95 2019: 127 2018: 154 2017: 207 2016: 176 2015: 395 2014: 507 2013: 174 2012: 196 2011: 359 Average: 229
SO

IN MY DARKEST HOUR

MEGADETH

SO FAR, SO GOOD... SO WHAT! 1988 6:26
2024: 953 2023: 1501 2022: 1457 2021: 1880 2020: 1668 Average: 1492
PEACE

PEACE SELLS

MEGADETH

PEACE SELLS... BUT WHO'S BUYING 1986 4:04
2024: 657 2023: 645 2022: 468 2021: 546 2020: 519 2019: 542 2018: 512 2017: 450 2016: 326 2013: 923 2003: 652 2002: 234 Average: 540
COUNTDOWN

SWEATING BULLETS

MEGADETH

COUNTDOWN TO EXTINCTION 1992 5:27
2024: 1499 2023: 971 2022: 1045 2021: 832 2020: 859 2019: 733 2018: 401 2017: 547 2016: 559 2012: 895 Average: 834
COUNTDOWN

SYMPHONY OF DESTRUCTION

MEGADETH

COUNTDOWN TO EXTINCTION 1992 4:06
2024: 61 2023: 115 2022: 201 2021: 127 2020: 113 2019: 141 2018: 78 2017: 90 2016: 143 2015: 247 2014: 371 2013: 87 2012: 117 2011: 138 2010: 194 2009: 258 2008: 306 2007: 450 2006: 282 2005: 256 2004: 217 2003: 170 2002: 218 Average: 190
RUST

TORNADO OF SOULS

MEGADETH

RUST IN PEACE 1990 5:19
2024: 513 2023: 598 2022: 577 2021: 588 2020: 627 2019: 770 Average: 612