Key words are the adjectives. All of the pathology described may be benign if it were mild. (It could still be symptomatic too.) However, the list of 'moderates' lets you know that there are some clear issues. (They also could be asymptomatic, but much less likely.)
This is still a huge puzzle and it's difficult to tell exactly what the issues are. As you've already had spine surgery and are probably marching towards more, learn as much as you can about your problem and about your options. Do your homework, make informed decisions.
Mark
PS... it's nice that you don't have any "severe's."
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