Agnosticism = (from Gk 'a' [no] 'gnosis' [knowledge] : belief in the existence of God is suspended on the grounds that on the available evidence the existence of God can be neither proven nor disproven.
It looks [[agnostics] say] as though there is some reason to believe that God exists (in the
form, say, of one of the classical arguments for God's existence); but it also looks
as though there is evidence that God does not exist (in the form of the atheistic
argument from evil); and whenever there is evidence that a given proposition, p,
is true and also evidence that it is false, the most rational thing for anyone who knows
that this is the case is to suspend judgement with respect to p. It follows that
agnosticism is epistemically preferable to theism and to atheism. (Clement Dore, 'Agnosticism', Religious Studies, Vol. 18, No. 4 (Dec. 1982), pp. 503-507 : 503.)
Atheism = belief that there is no God, that God does not exist. This position can be refined :
Atheism comes in many flavours. The most common is simple atheism:
SA: God does not exist.
A more complex flavour is evidential atheism:
EA: Owing to the direction of our overall available evidence, we should
believe that God does not exist.
Doxastic atheism, in contrast, states the following:
DA: Some people believe that God does not exist.
(Paul K. Moser, 'Undermining the case for evidential atheism', Religious Studies, Vol. 48, No. 1 (MARCH 2012), pp. 83-93 : 83.)
Theism = belief in the existence of God as the foundational concept for all other beliefs.
Ignosticism = no first order predicate applies meaningfully to God, so that God cannot be meaningfully talked about - except to say at a second order predicate level that God cannot be meaningfully talked about.
I agree with your own reckoning that you are (a) not an agnostic, an atheist in the philosophically relevant senses of either 'simple' or 'evidential' atheism, (b) a theist or (c) an ignostic. So what are you? If you merely radically ignored or eschewed any religious search or wondering, and had no interest, sympathy or concern regarding religious matters, those at least involving God, then you would be indifferent to God's existence, hence qualify as an indifferentist.
But you don't. You are not merely indifferent to God; you stand in opposition to God. If 'stand in opposition to' is 'fuzzy', as a critic has suggested, it can be refined to any extent. To begin, opposition goes beyond indifference. More than that, we can read it in terms of 'misotheism'. In fact what I suggest is that you are a misotheist (a term favoured by Bernard Schweitzer) which means that you are antipathetic to God. (A God-hater, one might say unless 'hatred' is too strong but that's for you to say.) Schweitzer identifies Job's wife, with her recommendation that her husband "curse God" (Job 2:9), as 'the original misotheist.. .willing to be damned rather than acquiesce in divine caprice' (Bernard Schweizer, Hating God: The Untold Story of Misotheism, Oxford University Press, 2011 :29).
This, then, is my suggested term.
Deism has been mentioned, which is certainly different from theism. For the deist God created the universe and lets it run its course under the laws of nature, also created by God, without intervention. The once popular analogy of God's creating a clock, determining its mechanism and setting it going before leaving it to operate totally according to its own nature is very apt. I rule you out as a deist because there is no negativity towards God in deism; and there is plenty of negativity towards God in your position.
My analysis of atheism has been rejected on the following grounds :
"Disbelief in..." is not the same as "Belief in the non-existence of...". Saying "I do not believe there are tooth fairies" is not the same as saying "I believe there are no tooth fairies". If someone says "I believe there is a god", there is a difference between replying "I do not believe that" and "I believe there is no god".
I reply :
I deny that atheism is the position merely of not believing that there is a God - as for instance I do not believe that there is an X because (say) I have never even heard of Xs. Atheism - simple atheism - is not just a negative state of non-belief in God but a positive state of believing that that God does not exist, that there is no God. 'Disbelief' in any case does not mean simply lack or absence of belief; it means a refusal to believe (OED) such as might follow evidential atheism. And if I refuse to believe that God exists, do I not believe that God does not exist? How could I say without contradiction : 'I refuse to believe that God exists but I believe that God exists'?