Clips...maybe, possibly part of a set meant to hold valves open so that with lifters held up or held up by inverting engine cam could be pulled without having to fight the old flathead guide wars?
I think you have the fulcrum bars figgered out, but can't be 100% sure since all I have is the bar part. I think those all constitute a complete set for big FH, probably there was another set of plates for 60. Again from memory, my Sunnen bar is buried at home somewhere, one end of bar is notched for 85, the other for 60.
I cannot remember where, but I have an ad advertising the Sunnen tools showing them all together.
On the guide retainer puller bar, go to the "collecting Snap-on" site...that guy has a LOT of old catalogs online and you can likely find the listing there.
Purpose was to yank the clips without having to first pull the guide down, destroying a dirt cheap part in exchange for saving an hour of prying, screaming, and cursing.
If the retainer was successfully pulled (sometimes those extractors tear out the hole instead of yanking the piece out!) the mechanic could go right to the heavy artillery like a KD puller or one of the hydraulig rigs and blast the valve assembly out without much effort.