But there's a fair amount of inter-model variety within those four/five brands. My 12v Dewalt impact punches above its weight/price and I have two Bosch 18v drills, similar in form factor but one is frankly inferior quality.
I really like Ryobi's 18V and 40V 'ecosystem'. Every time I am browsing Home Depot or their website, I come across new items that are compatible with these two ecosystems.
Just recently I saw everything from 18V Ryobi Glue Gun to a Portable Power washer that can suck water from a bucket (eliminating the need for a hose) to even a portable soldering iron! Hell they even got a boombox ha ha!
For the 40V I saw cool things such as a portable power generator, lawn mowers, wet dry vac and even a portable refrigerator.
Its really cool that there are like a bazillion things that your existing batteries can plug into.
Makita also has a large range but I usually have to order the less popular stuff but when I get it, it’s usually worth it.
Hilti makes some very large tools that if needed Festool does not have alternative. I have also seen a comparably priced Hilti drill/driver give up where a Makita kept going.