Four Parity 4x4s by Sir Moose: A twist on our usual variants

Today's Video:

Sir Moose brings us a brain teaser that feels familiar but different. Immensley enjoyable 1* puzzle to solve.

Link to Play:

Four Parity 4x4s by Sir Moose https://sudokupad.app/eib2jg1na4

Rules:

Normal sudoku rules do not apply.

Place the digits 1-8 in each row and column with no repeats

The 8x8 sudoku is made up of 4 separate 4x4 sudoku separated in red lines. Each 4x4 sudoku is made up of exactly 4 of the digits 1-8 placed once in each row, column, and 2x2 region.

Even digits may not be orthogonally adjacent to another even digit.

Digits along an arrow sum to the digit in that arrow's circle.

Digits separated by a black dot are in a 1:2 ratio. Not all dots are given.

The grid is partially covered by fog. Placing correct digits will clear surrounding fog.