At this point in time the Council consists of Yu (in the middle) and two unknown Goa'uld:
Who were those two Goa'uld?
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In addition to the High Lords are a host of lesser System Lords. The two Goa'uld that you've pictured don't appear to be named in the script nor the official cast/crew listings. They're just 'unnamed extras' brought in as set furniture.
There are no end of minor lordlings that these two could be including Afa and Vritra, mentioned earlier in the show but never actually seen.