Not sure if this is the right board so I may post to another one also

Long story short, what happens if you are listed in a will after someone passes away as an heir but with the finance company didn't list any beneficiaries for the IRA and investment stuff?

I'm guessing tax implications but I'm lost. I have a lawyer helping me but even they haven't seen no beneficiaries before. They said it's super super rare.

Can I not take it out (the IRA) over 10 years like most seem to do.

I'm not looking for financial advice just what the rules may be