(personal attacks snipped)
None of these positions are necessarily contradict any of the others.
The positions that the climate isn't changing, and that the climate is changing, are contradictory.
The positions that the climate is changing and we have nothing to do with it, and that the climate is changing, we have something to do with it, but the changes will be good are contradictory.
Now, if someone says "I think the changes will be less than the IPCC predicts based on X, Y and Z" - great. That's not denial. Likewise, if someone says "I think changes X and Y will be beneficial, and Z won't be" that's not denial. I am referring to the people whose one constant thread is denial. They switch between denial types based on whatever bit of research they can cherrypick that day. If on Monday they say that the climate may be changing, but it's all natural, they will argue that until they are blue in the face. Then, on Tuesday, they may come across a snippet about how one of the HADCRUT data sets was updated - and they will post "See? There's no warming!" That's because their objective is political, not scientific. They use science like a drunk uses a lamppost - for support, not illumination.
Now to specifics:
"1) The climate isn't warming that much, it's actually levelled off copared to predictions."
Incorrect. 2014, 2015 and 2016 showed a marked acceleration. On larger scales (i.e. averaging such spikes out) it is warming at about the rate the IPCC predicted, and shows no signs of leveling off.
"2) Our effect on the climate is minor at best."
Our AGW emissions are the primary reason we are seeing the warming we are seeing. We have increased CO2 concentrations, a primary greenhouse gas, by over 50%.
"3) Any effect we do have in the direction of warming may be beneficial given we're heading into a cooling phase that will greatly overpower any relatively recent warming."
If that were true we would be cooling. If you mean "we might hit a cooling trend in the future" that may be the case. We may also hit some natural warming. If those trends follow historical cases, they will be occur much more slowly than AGW changes.
"4) Increased temperatures will cause localised problems, such as an increase in the frequency and intensity of hurricanes."
"Solar forcing has a far larger effect on the climate than we ever could. One volcanic eruption not so long ago basically blocked out the sun for a whole year."
Yes. And we emit so much CO2 that we have changed the climate for decades.
If the Sun's output were changing, then that would be a larger effect. It isn't.
"There are a lot of people who stand to benefit from exaggerating warming and our influence on it. It's not a conspiracy theory, it's a fact. "
And there are orders of magnitude more people who stand to benefit from denying it. The fossil fuel industry is far, far larger than the renewable energy industry, for example.