Ideas on what's causing my click/tick/rattle noise?

Bewy said
Not lifters [post 53 ] because lifter noise is not engine load related.
If it is a 'double tap', it could be loose/worn piston pin. Especially if it is quieter on cold start up & gets noisier with heat. Cracked piston skirt also possible.

I do not get a double tap, just a single tap that follows RPM. The wrist pins were all redone at the machine shop. The noise is the same, hot or cold.

I will keep investigating...