FYI i am currently in the USA but my service career was in Canada, and about 95% of the appliance product is the same.
A couple of things:
1, Yes a bottom mount is the unit with the freezer door under the fridge door, a top mount is the standard fridge with the freezer door on top, hope that is more clear
2, Sears Kenmore is not all made by Whirlpool, even for a given product. In fact some of their bottom mounts are made by LG, some are Whirlpool. It's sometimes hard for a consumer to tell.
3, Yes, I have found that the whirlpool bottom mount is in general a good unit. It is actually for reference sake, designed and made by Amana, which now through corporate buy outs is owned by whirlpool. This unit has proven to be quite reliable top to bottom, good shelving , doors, hinges, sealed system etc. Of course mileage may vary. The LG unit is also pretty good, maybe even a tad bit better.
And no offense to Mezulluna, but historically the GE designed products have been pretty repair prone. I say GE deisgned, because they do make their own bottom mount, but have recently been selling a number of LG made fridges under their label. GE no longer owns GE home appliance, they simply licence the name to MABE Inc. Again mileage may vary, some people swear by GE.
4, French door models from every manufacturer, to the best of my knowledge, are the exact same functional machine as the equivalent bottom mount unit, but with different doors. In fact most on most of them you could (at much expense) swap the doors from one to the other and no one would be the wiser. in other words a french door unit is just a bottom mount with funny doors.
5, wtdedula, my favorites while i was servicing ( and there may be new stuff now)
fridge- sub zero, leibherr, LG, Maytag/ Amana/ Whirlpool bottom mount (these 3 are all functionally the same and , only differ in options and price)
Stove- Wolf, Miele (cooktops and wall ovens only), Maytag/ Amana (may not be available anymore as whirlpool has bought them out), Frigidaire (some of their mid range stuff is a good value)
Stuff i always saw as repair prone or cheaply made- Again MILEAGE MAY VARY!!!
fridge- GE, Frigidaire , Kitchenaid (just a very very expensive whirlpool in most cases), Samsung, Haier
Stove- Viking, GE, Frigidaire (the cheap stuff is too cheap and the expensive stuff is too expensive for what you get), thermador
there are others but this post is already way too long. Again you'll find differing opinions online, even here. Some people love there Viking stove, I have never met one of them.