ITT

Post artists that started out strong in the beginning of their career, had a lull, then came back strong later on

no

almost all of them? too many to name.

Arguably Paradise Lost but I even like their mid-period stuff.

What even happened after Let's Dance? And arguably during Let's Dance.

Aerosmith. First was a bad ass rock band in the 70's, then both guitarists leave the band in the late 70s/early 80s, get band back together in 85, put out a decent album that flopped big time, make a mainstream record in 87, and BAM. Back in the spotlight

...

Bathory.

Weezer
Sonic Youth
Death Grips
Captain Beefheart
David Bowie

>almost all of them
Nah, most never come out of decline, or at least reach the heights of their earlier, most acclaimed work.