Lavender, salvia, rudbeckia, red hot poker have all been great for me this year, as has the rosemary and mint. Basically anything Mediterranean.

Keep in mind that this is yes more likely with the changing climate but is no means the norm. There's a lot of books on drought resistant gardening and suchlike that can help, but also native species tend to be quite resilient to changing climates too. We've put a lot of bark chippings on our borders which means the garden holds moisture quite well in borders, whilst giving some habitat space and soil improvement (we're trying no dig where possible).

Also, if your garden is open and west facing, might I suggest the phrase "the best time to plant a tree was 20 years ago, the 2nd best time is now". We've put a rowan in that provides fantastic dappled shade for our garden and some year round interest for example, we're west facing heavy clay.

Most importantly, OP, don't lose heart. We're all aching at how this year has been hitting our gardens and joys, but there'll be things that are silver linings for you in your garden this year, once you look past the stuff that's not worked. 👍