I have a few Non-LAANC authorizations in California and Hawaii. Depending on the areas, it took from 1 week to 3. Even with operating in areas with military aircraft. There were very specific rules involved such as the amount of time needed to notify the specific air towers prior to my operations. Most of the time I tried to not "max out" on the allowed 400ft height limit. I'd ask for 200, but they gave me 400 anyway on a couple of them. Some of them were granted for a 2 year period, while a couple of others with busy traffic areas were granted for one year. I believe once you've established with them that you are responsible and have never had any complaints about your flights they are very quick to authorize you. On a couple of mine, I reached my 2 year mark and resubmitted with the same format as the first time, no questions asked and received an approval back within a week. These were all for Class D airspace. A couple of them are Federal Contractor controlled.