There are no hard and fast rules. (If there were, the US embassy would be able to apply them, rather than having to refer everything to Washington for their discretionary process).
However the US authorities regard crimes of 'moral turpitude' very seriously. (Their criteria seem weird to us. Nicking a Mars bar is a crime of moral turpitude, and thus likely to see the offender barred from entering the USA. Beating someone up is not normally a crime of moral turpitude and so, for immigration purposes, regarded less seriously than nicking a Mars bar!).
All three of your husband's offences count as 'moral turpitude'. In some US states three such offences are sufficient to get the offender locked up for the rest of his life, so they're certainly taken extremely seriously. I've seen a post, here on AB, from someone whose partner had been convicted of two offences of driving without insurance. He had a 10 month wait to hear the result of his visa application, which was then turned down.
As I stated at the beginning of this post, there are no hard and fast rules. But if I was a bookmaker trying to assess the probability of your husband getting a visa I'd happily give odds of at least 100 to 1, since I think that his chances of being successful are likely to be less than 1%.
Chris