Many brands of rings, pinned and ramped and not pinned and ramped will work well enough. Actually, the non pinned and ramped will often give you less trouble if your front derailleur is not perfectly adjusted.

Chainrings sets are matched so the pins and ramps of each ring are in a particular relationship to each other and to the position of the arms. Sets of rings are usually marked so you get them in the proper orientation. Of course, the inner ring dosen't have any.

The hidden chain ring bolt on the Sugino is a real pain to deal with, but I did for several years. The one real problem I encounter was mixing chainrings. I did this to get ratios I wanted and, surprise! to save money. ( I have lots of chainring hanging in the shed) Though is is not a problem to put 'sets' of chainring on a given crank. (Sugino rings on a Shimano crank or vice versa.) It is a problem using Shimano and Sugino rings together. Their offset from the spiders are slightly different, enough so to make adjusting a triple derailleur very difficult. So if you use different rings, I've found I had to put spacers (also known as washers) on the spider to make the offset the same for each ring. Then you can go ahead and adjust your derailleur.

I finally got fed up with the Sugino triple crank and replaced just that part of my tandem crankset to one that was completely compatible with the Shimano standard.

Anyway, that was my experience and my path of 'discovery.'