I don’t own your phone but I had a parallel similar problem with my last couple of phones - Oneplus - which had a sufficiently weird charging technology you had to buy their charger to get fastest speed, or buy Anker which is slower. Sounds awful.
What I did was a bit of both, there are situations you need the fastest possible charge, for that I used the phone supplier’s fastest charger.
I also did exactly what @paulstevenewing did of use Anker chargers for everything else, not as fast, it is true, but fast enough for most situations and importantly works out lowest cost and still reliable.
Combined this works, lowest cost and cover all situations.
The bedside charging need doesn’t need much Wattage as it has all night to recharge.
Wireless charging is more of a top-up, and 10W is ample for that.
Portable chargers, by definition, are with you all the time, so they never need to be fast as you just plug them in for longer. All of Anker Powercore have at least a 10W Type A port, some also have 18W Type C which will negotiate down to 10W.
You only need to own 1 of the fastest possible charger, buy that from the phone supplier, that covers the corner case. Anker for everything else complements.
My prediction is when you buy the Samsung’s own 45W charger, to charge from flat to full in the shortest time, you will probably not use it often as with a 10W Anker Powerpad in a couple of common places and a 10W Powercore in your bag, will mean you rarely have a near flat phone anyway.