I think the Aspie test tends to put people who are indecisive as having both Neurotypical and Neurodiverse traits, which I find to be kind of strange because indecisiveness is a trait that many people with ASD share.
Most other tests have a "forced decision" where you don't have an option to answer completely in the middle for any question. I got a similar result to you the first time I did the Aspie test. When I did the test again, making an effort not to be indecisive and only choose the middle option where I really thought I had to, I came out much more solidly Neurdiverse.
On every other test I've done, I got results that were much more solidly having ASD, but as I mentioned above, most of these other tests are "forced decision".
On the AQ test (Autism Quotient, available at https://aspergerstest.net/aq-test/), I scored 36 the first time I did it, where 26-31 is borderline and 32+ is probable ASD.
On the EQ test (Empathy Quotient, available at https://psychology-tools.com/test/empathy-quotient), I scored 12 the first time I did it, where anything 30 or less is probable ASD.
There were other tests too, but I can't think of them off the top of my head.
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Level 1 Autism Spectrum Disorder / Asperger's Syndrome.