That's 3 in the Spotlight...

Today's Puzzle:

A homage to Cracking the Cryptic's meme of three in the corner with this beautiful puzzle that will keep you bouncing around the grid. Enjoy!

Link to Play Along:

That's 3 in the spotlight... by Flinty https://tinyurl.com/SudokuSleuth3InTheSpotlight

Rules:

Normal Sudoku Rules Apply.

Thermometers Digits along a thermometer must increase starting at the bulb.

Kropki Dots Cells separated by white dots are consecutive in value. Cells separated by black dots have values in 2:1 ratio. Not all dots are given.

Little Killer Skyscrapers The digits outside the grid are both Little Killers AND Skyscrapers. Along the diagonal, indicates that digits must sum to this total. Indicates the number of buildings that can be seen from that perspective orthogonally.

Quadruple Digits in circles must appear at least once in the surrounding 2x2 area.