What wires do you splice in a 3-way switch?

Question

I want to put two 3-way switches in the same box. I'm uncertain what splices I have to make, but I have an educated guess. (Diagram below)
Here's my assumptions:

The hots (black) from the 14-3 wire get spliced together with: the source hot and hots running to each switch

The 14-3 reds do not get spliced together.

A hot from each light fixture runs to it's switch

Does this look accurate and code compliant with NEC (red rectangles indicate marretts) ?
The diagram shows two switches for two different lights, each part of their own 3-way. In case the notation wasn't clear, the green circle is a grounding screw (this is a metal 2-gang box)
(Note: It looks like some of my neutrals in my diagram are hidden by grounds. I plan to splice all neutrals in the box together)

A. I. Breveleri · Accepted Answer

There are several ways to wire this circuit, but this is the one that will be least confusing to any future maintainers (which might even be you, two or three years from now).

I have put a "C" next to the common terminal on each switch.
Note that the white wires running to the remote 3-ways are marked with black paint or tape at both ends to indicate that they carry constant-hot and not neutral.

What wires do you splice in a 3-way switch?

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