There's a crapload of "unused" assets for World Rankings in Sonic Adventure 2 (I think there's a way to enable them, there's too much there, but it's my opinion)
Using the following Code Breaker codes, you can view some of the SA2 World Rankings assets
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Enable Code:
0F0C0D76
00000008
WR Menu Button (extras menu)
005CCB09
00000000
Press A + D-Pad Up to enable the menu background
0E06FFEB
001974A8
0062243C
00000001
0062244C
00000001
0062245C
00000001
THEN Press Y + D-Pad Down/Right to enable a "Dialing" menu
0E04FD5F
001974A8
006224CC
00000001
006224DC
00000001
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None of the menus work, but it allows you to view the content of an unreleased/unused feature in the game for those who are interested
https://tcrf.net/Sonic_Adventure_2_(Dreamcast)#World_Ranking_System