I used the Gura songs mega to find which songs she's sung the most. It's not the best because some of these are multiple takes from the same karaoke but yeah.
8 : Take Me Home, Country Roads
.\2020\2020-10-31 - Campfire Karaoke\11 - Take Me Home, Country Roads.m4a
.\2020\2020-11-12 - Unarchived Karaoke\03 - Take Me Home, Country Roads.m4a
.\2021\2021-01-15 - Ukulele Jam Night\11 - Take Me Home, Country Roads.m4a
.\2021\2021-05-01 - Campfire Singing\10 - Take Me Home, Country Roads.m4a
.\2021\2021-05-01 - Campfire Singing\11 - Take Me Home, Country Roads.m4a
.\2021\2021-05-09 - Hello Everynyan\01 - Take Me Home, Country Roads.m4a
.\2021\2021-06-07 - Short Sing\10 - Take Me Home, Country Roads (featuring Amelia Watson).m4a
.\2021\2021-09-05 - Chill Karaoke\08 - Take Me Home, Country Roads (featuring Mori Calliope).m4a
6 : Fly Me to the Moon
.\2020\2020-09-30 - Karaoke\06 - Fly Me to the Moon.m4a
.\2020\2020-12-20 - Jazz Lounge Karaoke\01 - Fly Me to the Moon.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\19 - Fly Me to the Moon.m4a
.\2021\2021-08-17 - Gawr\08 - Fly Me to the Moon.m4a
.\2021\2021-08-28 - Unarchived Karaoke\07 - Fly Me to the Moon.m4a
.\2021\2021-09-05 - Chill Karaoke\16 - Fly Me to the Moon.m4a
6 : Part of Your World
.\2021\2021-02-23 - Unarchived Karaoke\05 - Part of Your World.m4a
.\2021\2021-02-23 - Unarchived Karaoke\06 - Part of Your World.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\09 - Part of Your World.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\10 - Part of Your World.m4a
.\2021\2021-09-05 - Chill Karaoke\07 - Part of Your World (featuring Amelia Watson).m4a
.\2021\2021-11-17 - Dino Karaoke\10 - Part of Your World.m4a
5 : The Moon Song
.\2020\2020-10-31 - Campfire Karaoke\06 - The Moon Song.m4a
.\2020\2020-10-31 - Campfire Karaoke\13 - The Moon Song.m4a
.\2021\2021-01-15 - Ukulele Jam Night\12 - The Moon Song.m4a
.\2021\2021-04-16 - Unarchived Karaoke\23 - The Moon Song.m4a
.\2021\2021-05-09 - Hello Everynyan\02 - The Moon Song.m4a
5 : Plastic Love
.\2020\2020-10-31 - Campfire Karaoke\07 - Plastic Love.m4a
.\2020\2020-11-12 - Unarchived Karaoke\01 - Plastic Love.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\14 - Plastic Love.m4a
.\2021\2021-09-15 - Jazzy Karaoke\14 - Plastic Love.m4a
.\2021\2021-09-15 - Jazzy Karaoke\15 - Plastic Love.m4a
5 : Song of the Ancients
.\2021\2021-01-15 - Ukulele Jam Night\09 - Song of the Ancients.m4a
.\2021\2021-01-15 - Ukulele Jam Night\10 - Song of the Ancients.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\08 - Song of the Ancients.m4a
.\2021\2021-04-16 - Unarchived Karaoke\21 - Song of the Ancients.m4a
.\2021\2021-05-01 - Campfire Singing\03 - Song of the Ancients.m4a
4 : Ride on Time
.\2020\2020-09-12 - Debut Stream\01 - Ride on Time.m4a
.\2020\2020-09-30 - Karaoke\01 - Ride on Time.m4a
.\2020\2020-11-12 - Unarchived Karaoke\09 - Ride on Time.m4a
.\2021\2021-09-12 - 1 Year Anniversary\01 - Ride on Time.m4a
4 : Mousou Express
.\2020\2020-09-30 - Karaoke\11 - Mousou Express.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\06 - Mousou Express.m4a
.\2021\2021-09-15 - Jazzy Karaoke\12 - Mousou Express.m4a
.\2021\2021-09-15 - Jazzy Karaoke\13 - Mousou Express.m4a
4 : Stay With Me
.\2020\2020-11-13 - Unarchived Karaoke\03 - Stay With Me.m4a
.\2021\2021-03-11 - Ukulele & Karaoke\15 - Stay With Me.m4a
.\2021\2021-08-28 - Unarchived Karaoke\03 - Stay With Me.m4a
.\2021\2021-09-05 - Chill Karaoke\01 - Stay With Me.m4a
4 : Live Again
.\2021\2021-01-22 - 2 Million Party\03 - Live Again.m4a
.\2021\2021-01-22 - 2 Million Party\10 - Live Again.m4a
.\2021\2021-04-28 - AI Dungeon\01 - Live Again.m4a
.\2021\2021-05-01 - Campfire Singing\05 - Live Again.m4a
4 : Reflection
.\2021\2021-04-16 - Unarchived Karaoke\24 - Reflection.m4a
.\2021\2021-04-16 - Unarchived Karaoke\25 - Reflection.m4a
.\2021\2021-09-15 - Jazzy Karaoke\21 - Reflection (featuring Amelia Watson).m4a
.\2021\2021-10-04 - Unarchived Karaoke\19 - Reflection.m4a
4 : Skyfall
.\2021\2021-05-20 - Unarchived Karaoke\02 - Skyfall.m4a
.\2021\2021-05-20 - Unarchived Karaoke\21 - Skyfall.m4a
.\2021\2021-06-07 - Short Sing\14 - Skyfall.m4a
.\2021\2021-06-18 - Unarchived Karaoke\09 - Skyfall.m4a
4 : I Beg You
.\2021\2021-06-07 - Short Sing\06 - I Beg You.m4a
.\2021\2021-06-07 - Short Sing\07 - I Beg You.m4a
.\2021\2021-06-07 - Short Sing\08 - I Beg You.m4a
.\2021\2021-06-18 - Unarchived Karaoke\02 - I Beg You.m4a