And the rest? Like his suit?
Having a suit and a car is more than possible for any not-that-important civil servant lol
A bank manager can have those with the proper financial care, and motivation won't be helping pinning down on Bruce either due to Gotham being a hellhole with all possible crimes happening everywhere, so basically all Gotham have enough motivation to become Batman lmao
It still shows that Batman has a lot of money and would need money to train his obviously high level of martial arts.
Don't think any reports would go out of its way to talk about that, because he can get into prolonged fights (most of them are not going into reports due to being in strange and far from policemen situations) but he's always getting hit more than once, it's not like Bruce Lee or other cqc-oriented characters
The level of martial arts we're shown is not the unbelievable one from the likes Christian Bale's Batman or Comics', it just shows he's got some training, but if Ras'Al Ghul will become a thing, it haven't been part of his life yet lol
That and Bruce's backstory already gives him a clear motive to fight crime, which Light would identify.
I went through it for a bit but we're introduced to Gotham being a hellhole, not only in the movie but in the Penguim TV Show also
Organized Crime has been amidst the city's politics for decades, nobody feels safe at any point of the day, specially at night, the city's been divided between at least 5 gangs and the division keeps changing all the time.
I say all of that because basically anyone has the perfect motive to become Batman and classified data shouldn't have much of interest to point out someone
obscenely rich is the guy, though because he has a custom suit and a car (Gotham is already facing disaster when he uses his 2nd bike so there shouldn't be a dedicated CIA file on the matter and i can't see Light knowing that at all) it clearly shouldn't be someone poor so only a few hundred people should fit the criteria and even Light should take a few days to sort through them and have Bruce as a
main suspect (among so many people, assume a billionaire will go out of his way to personally fight crime? Would take a while to find reasoning for this claim and I once again tell you that people with access to several data were attempting to know that and couldn't) and in that meantime it is more than possible for the line i proposed to go through.