Tim, Here's my take on this : Background, I kept a detailed log of conditions for 15 years. It followed air & water temps, relative sunniness or overcast, time of day, relative humidity, falling or rising or steady barometer with the actual value, water clarity, body of water, and more. I'm predisposed to this weird behavior by educational experiences, work environment, and probably ethnicity ( I'm 2nd generation German-American ).
My belief is that it's not the barometric values that actually dictate the fishing conditions, BUT, a steady low, or falling barometer is usually accompanied by cloudy or somewhat overcast conditions. I speculate that the fish are more actively feeding during these conditions for a couple of reasons..
One is that they are free to roam around less visible to predator birds 🦅. Another is they can use these opportunities to search for prey without having to ambush smaller fish from a dark hideout that transitions from a sunny area( like under the lily pads ). This is what the basis is for finding bass on the shady side of stumps or under blowdowns or in thick weedbeds. Those attract bait by providing reduced water temps, food, cover and concealment. You probably have noticed Bass cruising around the shallows that have no cover on warm nights as the water cools, and because of the relative lack of light, their ambush points are not an advantage. Also, it's a great place for them to find crawfish 🦞, but that's not relevant to my "analysis".
So, this is my theory, and I wish I could tell ya that it's strongly indicated valid by my complied data, but it's
only coincidentally connected. But I kinda believe it helps. This activity kept me outta bars and away from less wholesome pursuits for a while, so it was no big loss. I'm Nutz anyway, and it doesn't hurt anyone.

I get up to Ontario about every three years. Go to Oak Lake Lodge on the English River mostly, but have done several out post trips on other lakes over the years. Too old (or spoiled) to go outpost now.

Can’t beat fishing for walleye for shore lunch first thing and then switching to northern and smallmouth. Oak Lake is catch and release except for shore lunch and has many nice fish. The smallmouth population is growing as well; twenty years ago we would pick an occasional smallie but now there are plenty.