Low bb is nice for carving turns and stability, but you can go too low. A higher BB is easier to initially tip into a turn and usually easier to pop the front wheel, but there are extremes at either end that just go too far and push the bike into too niche an area. Same for long, low, slack (I don’t want my hard tail to have similar angles to my enduro bike – just becomes really hard work and destroys rims). I prefer a hard tail that is a bit more general and it sounds as though you want that too.
As mentioned above, check out Hardtail Party on YouTube. Some excellent videos on there to compare bikes and brands and by watching those you’ll start to pick up the lingo so you can answer your own questions on what you think you might want.
For me, something like a Ragley Marley would be good, but you’ll have to be looking at a recent year second hand model at the moment unless you put down a deposit with a local Ragley dealer and wait until they can get you a frame. Hardtail Party man loved his!
Good luck!