Here is the combined Billboard Hot 100 chart history for some of the most successful ex-acts including Britney Spears, Christina Aguilera, Justin Timberlake, Miley Cyrus, Jonas Brothers, Demi Lovato, Selena Gomez, Ariana Grande & Olivia Rodrigo.
Timemarks (not including soundtracks):
0:00 — Britney Spears' '...Baby One More Time' Era
0:40 — Christina Aguilera's 'Christina Aguilera' Era
1:33 — Britney Spears' 'Oops... I Did It Again' Era
3:04 — Britney Spears' 'Britney' Era
3:33 — Justin Timberlake's 'Justified' Era
3:36 — Christina Aguilera's 'Stripped' Era
4:46 — Britney Spears' 'In The Zone' Era
6:18 — Christina Aguilera's 'Back To Basics' Era
6:23 — Justin Timberlake's 'FutureSex/LoveSounds' Era
7:00 — Jonas Brothers' 'Jonas Brothers' Era
7:40 — Britney Spears' 'Blackout' Era
8:28 — Miley Cyrus' 'Breakout' Era
8:32 — Jonas Brothers' 'A Little Bit Longer' Era
8:41 — Demi Lovato's 'Don't Forget' Era
8:49 — Britney Spears' 'Circus' Era
9:30 — Jonas Brothers' 'Lines, Vines And Trying Times' Era
9:37 — Demi Lovato's 'Here We Go Again' Era
9:46 — Miley Cyrus' 'Time Of Our Lives' Era
9:49 — Selena Gomez's 'Kiss & Tell' Era
10:30 — Christina Aguilera's 'Bionic' Era
10:35 — Miley Cyrus' 'Can't Be Tamed' Era
10:42 — Selena Gomez's 'A Year Without Rain' Era
11:14 — Britney Spears' 'Femme Fatale' Era
11:25 — Selena Gomez's 'When The Sun Goes Down' Era
11:46 — Demi Lovato's 'Unbroken' Era
13:04 — Christina Aguilera's 'Lotus' Era
13:23 — Justin Timberlake's '20/20 Experience' Era
13:32 — Demi Lovato's 'Demi' Era
13:37 — Ariana Grande's 'Yours Truly' Era
13:40 — Selena Gomez's 'Stars Dance' Era
13:50 — Miley Cyrus' 'Bangerz' Era
14:09 — Britney Spears' 'Britney Jean' Era
14:48 — Ariana Grande's 'My Everything' Era
15:13 — Nick Jonas' 'Nick Jonas' Era
16:04 — Selena Gomez's 'Revival' Era
16:06 — Demi Lovato's 'Confident' Era
16:25 — DNCE's 'DNCE' Era
16:51 — Ariana Grande's 'Dangerous Woman' Era
16:55 — Nick Jonas' 'Last Year Was Complicated' Era
17:14 — Britney Spears' 'Glory' Era
18:06 — Miley Cyrus' 'Younger Now' Era
18:18 — Demi Lovato's 'Tell Me You Love Me' Era
18:50 — Justin Timberlake's 'Man Of The Woods' Era
19:09 — Ariana Grande's 'Sweetener' Era
19:44 — Ariana Grande's 'Thank U, Next' Era
20:05 — Jonas Brothers' 'Happiness Begins' Era
20:22 — Miley Cyrus' 'She Is Coming' Era
20:47 — Selena Gomez's 'Rare' Era
21:04 — Demi Lovato's 'Dancing With The Devil... The Art Of Starting Over' Era
21:40 — Miley Cyrus' 'Plastic Hearts' Era
21:53 — Ariana Grande's 'Positions' Era
22:06 — Olivia Rodrigo's 'Sour' Era
22:08 — Selena Gomez's 'Revelacion' Era
23:36 — Demi Lovato's 'Holy Fvck' Era
24:02 — Miley Cyrus' 'Endless Summer Vacation' Era
24:21 — Jonas Brothers' 'The Album' Era