Yes it is. And, because one would assume that the "multiple entry" facet of the LTR Visa is one of the primary benefits, together with the fact that most, if not all, LTR Visa Holders are wealthy enough to travel outside the country at least once a year, essentially it would mean NO Reporting would ever be required -- IF, in fact, the "clock is reset" like the 90-Day.
Question on LTR "Annual" Reporting -- if you leave the country during the year, does it "reset the clock" like with the 90-day Reporting? Or, no matter what, you need to make a 1-yr report with the LTR -- (if so, even if you are currently out of the country?)?
An actual "Spouse Visa" usually refers to a foreigner married to a Thai. I believe you are actually inquiring about a Dependent/Family Visa, which is when you are married to or child of a Foreigner working in Thailand. In this case, you can either apply outside of Thailand for a Non-O Dependent Visa, which is valid for 90 days; or you can apply inside Thailand after arrival by converting using Form TM86, and can then be extended later for 1 year.