Mine is the wings of fire series, it is a “kids” novel (think like warrior cats age range)
But Tui T sutherland is so good at writing characters and introducing and describing worlds and characters that i reread it every so often. Like, she managed to write a book from the pov of a mind reader and it works.
Every book is from a different character’s pov and each character feels wholly unique.
The main issue with the series is that the plot is kinda average at best, the characters really carry the story.
Not my favourite, but one I just finished was Invasion: Downfall by DC Alden
An action thriller about a hypothetical invasion of the UK by the Islamic state
It’s mostly all-action from the start, but there’s a lot of "what-if"s about what the average citizen would do if that happened
Needless to say, despite being a fantastic series, it gets some utterly unhinged reviews, and there’s no fucking way it’s ever getting made into a film lol