And I recall it as being a (US) Kits Camera brand.
I think that all three were related at one time or another.
Quantaray was a trademark of Ray Enterprises LLC [the holding company for Ritz Camera Centers, Inc.] and served as the Ritz house brand going back to the 60's.
Quantaray was very much like Promaster, essentially just a marketing company with an extensive line of branded accessories but which actually made nothing. Quantaray, like Promaster, would send out RFPs every quarter, bi-annually, yearly, etc. to various OEMs asking them to submit bids to supply Ray/Ritz/Quantaray with re-branded or excess capacity versions of their lenses, filters, flashes, etc.
If Ritz sent out an RFP for a 28-80 f/3.5 in N,C,M, and PK mounts and Tokina's bid was the cheapest then Quantaray's 28-80 f/3.5 would be a re-branded Tokina. It was often the case that when a particular contract was fulfilled, a new bid would be sent out and another OEM would submit a lower price, thus that lens would now be a re-branded Kiron, Tamron, Sigma, etc.
It was pretty easy to tell who actually made a given lens as in order to lower costs the only things that Ritz had changed from the OEM design was the chapter ring and the rubber grips.
OEM suppliers for Quantaray filters for example varied mostly between Hoya and Tiffen. Various Quantaray flashes were made by Sunpak, Vivitar [Panasonic], etc.
Of course when Ritz bought Kits and then Wolf's, Quantaray-branded products were inserted into their inventories as well.
Whether or not a particular Quantaray lens was any good was dependent upon the quality of the OEM lens itself, not the Quantaray name brand. A few Quantaray lenses were excellent, some were good-to-very good, and many were crap - but not because they were "Quantaray", rather because the underlying Sigma, Tokina, Tamron, or Kiron lens was crap.
The Quantaray AF 70-210 f/2.8 of the early-to-mid 90's for example [a re-branded Sigma] was a very good lens and a smoking deal considering the lower price and the 5-Year Ritz warranty. The ubiquitous AF 35-70 f/3.5 "kit lens" of the same period however - also a Sigma - was complete crap.