I second the poster who said Taylor Dayne - my favourite singer, with a massively underrated voice. Everyone remembers ‘Tell it to My Heart’, but tracks like ‘Prove Your Love’ and ‘I’ll Be Your Shelter’ are also awesome.
For uplifting tracks, you can’t help smiling at anything by Voice of the Beehive. ‘Don’t Call Me Baby’ is one of the most perfect pop records ever.
For something a bit more calming/heartfelt, I’d always recommend Julia Fordham. ‘Where Does the Time Go?’ is a classic.
Should’ve been hits but weren’t:
Swimming With Sharks - Careless Love
Darling Buds - Burst
Blue Mercedes - Love is the Gun
Tiffany - All This Time
Bangles - Following
Kirsty McColl - Free World
Well-known artists, but lesser-known songs:
Belinda Carlisle - I Get Weak
Black - Paradise
Then Jericho - Sugar Box
Swing Out Sister - You on my Mind
That last one is particularly special to me, as it’s essentially the story of the biggest relationship in my life ❤️