Katie my point was to show that the Sierra's printed logo didn't change since KQ1 (rerelease), up to KQ6.
The others show the KQ7/SQ6 era logo. Where they changed the font, and moved up to the top right corner of the Half Dome.
If you want to stick to just the half dome itself, and ignore the font, Sierra really only changed four times really. The Online systems version, the pre-1984/early-1984, "sierra-online version, the Sierra Studios version, then back to the half dome with yet another font. Most of the other eras they kept the basic interlaced Half Dome and just changed the font.
Here is an image of the "online systems" precursor logo;

Also, bwa, "Softporn"??
It's the precursor to the original Leisure Suit Larry. LSL was actually pretty much a remake.