Thanks so much for the positive replies!
Yes, I do get a bit wordy at times, but that's because I want to cover all bases when it comes to why various action/profiles catch fish, from trout flies to the
Flat Fish (ring a bell?

The following touches on ideas many anglers can't or won't accept for whatever reason, but, my 50 years of having caught fish on most lure types ever made allows me room to speculate as to
why fish strike objects that don't come close to being natural in shape nor action.
If bored easily or you find the topic of no value, don't bother reading. It is a long one. Comments that address various opinions based on
personal observations are welcome. But repeating the usual mantra as to why fish attack lures is not only unproven but based on speculation and generalities. My premises are based on A + B=C, with A + B observations + test results (catching fish consistently) and C the only conclusion that can be drawn.
Ove many yeas like most of you, I've bought hundreds of lures based on advertising pitches whether in print or on TV fishing-show content. It was nice to simply assume the reasons given why fish strike different lures and then order some from Bass Pro or Cabelas. But once I started making my own spinnerbaits and bass jig, interchanging parts such a skirt materials and colosr and blade shapes and sizes, it began to occur to me that lure design is like one's preference in products in general: here today/ gone tomorrow.
What's more - and more important - is formulating some ideas as to why fish strike lures, thereby
simplifying one's choices. (Not good for lure companies.)
The premise for why fish strike, reduces fish to brain-simple predators, unlike land predators. Their senses have evolved but left the thought process behind whcih has been attributed to a fish's selection of lures. In fact, selection is based IMO on just a few things:
1. fish don't hunt or track prey like land predators (bird or 4-legged predator types)
If prey is present, it must fit certain parameters such as size, shape, action and speed before fish attack. (Lures are no different.)
2. fish don't necessarily attack prey because of hunger as attributed by many, which leads me to consider this possibility: fish and other predators are simply BULLIES. Small prey or soft plastics for example are not necessarily swallowed once in a fish's mouth, which leads me to wonder,
why attack a moving object in the first place - any object - and especially lures made of lead, silicone, bronze, tin, plastisol, fur and any other non-protein material. Consider the following:
3. Anyone who believes that fish believe a lure is this or that prey animal and strkes lures based on that, may be right in their choice but not why fish struck. This is where lure design matters - ALWAYS!
The number of lure action-profiles/shapes fish strike is infinite. Some are far better at provoking strikes due to unique
strike-triggers that evolution has determined fish must strike that's a part of their DNA. In this sense,
reaction-strikes are in the majority whether slow or fast reactions.
All of this relates to the hundreds of photos I've posted on many fishing forums as examples of the various strike-triggers most fish attack. Are they unique? Some are in size and shape, but all display actions, in general, that were discovered and promoted in the last century. None of what you or I produce is unique in action, but who cares? The fun of making and/or modifying lures is knowing which catch fish best.
Example:
Have any of you ever cut off the curl tail from a Mr Twister or similar grub? After I lost the tail to a fish, I left it on the jig and dang if it didn't do better than the curl tail. Once I got home, I made others similar and also in slightly different shapes and thicknesses. The various shapes range from a light bulb to a large pill to a ribbed blob. ALL HAVE CAUGHT 5 SPECIES OF FISH IN MANY SIZES! Ya think anyone tried that simple modification that works better on the slowest retrieve than the curl tail ?!! Nope.
Note: If anyone who has caught bass on the Zara Spook knows, it's not what the splashing-waddle represents when bass strike it on the surface. It's the
waddle.
Most lipped crankbaits produce the same waddle and so does my no-action-tail grub except in miniature. Whereas the Spook and larger crankbaits catch mostly larger fish, this little waddling grub catches even the smallest fish.

Granted, it hasn't wowed anyone, but it is an example of a unique shape/action/size combination able to produce a particular strike trigger that's caught millions of freshwater fish. There are a slew of other examples, but I don't know if anyone else finds the above an eye-opener.
Again, thanks much for your kind words and encouragement to share ideas - something as important to me as fishing itself.