Well, I'll take a look at the holydivers. The clean sound is really good in the demos. The tone charts are driving me crazy... hahaha
If the alnico nailbomb is upper-mids focused, would you say it is similar to a Seymour Duncan JB?
I stopped looking too closely at the tone charts a couple of years ago as they can be massively misleading. Knowing the magnet, wire and DC resistance allows me a reasonable idea of what a pickup will sound like and then the tone chart simply refines that impression. The tone charts are also just for the bridge version, which makes choosing a neck pickup even more confusing!
In comparison to the JB, the A-Bomb is significantly more hairy and aggressive, a lot tighter and has a lot more upper mids. If anything, the JB is closer to the Holydiver. I think there are three pickups in the range that you'd like and would work in your guitar.
Holydiver
Although it's a middy pickup, the mids are evenly spread so you tend not to notice the mid-hump as much as you might expect. It's also a very smooth sounding pickup, strongly reminiscent of 80s Metal but with a slightly more modern feel due to the 44AWG wire. It has the best cleans of the three pickups I'm suggesting and the best lead tone. Pretty versatile pickup.
Cold SweatLess compressed than the other two so whereas the Holydiver is based right in the heart of 80s Metal, the Cold Sweat is more a late 70s and early 80s Metal pickup. It's versatile and is good at bridging the gap between Rock and Metal thanks to its more open tone. It has the second best cleans and for rhythm and lead, it's a bit of an all-rounder.
Miracle Man
This is another one where you need to largely ignore the tone chart. This pickup is actually very closely related to the Holydiver as its smooth tone is strongly reminiscent of 80s Metal but in this case, the ceramic magnet, hotter wind and slightly scooped nature means it's more late 80s and early 90s Metal. There are mids here but where the Holydiver's mids are evenly spread, the Miracle Man is more towards the lower mids. Think of it as a Holydiver with a bigger bottom end and more screaming highs for solos as well as being tighter overall. It's also a pickup that sits well in a mahogany guitar like yours. The cleans are the weakest of these three but it really shines in other areas. This isn't the pickup you might be expecting. I would suggest you read the reviews on all three in the review thread.