My current broker has just updated its charts types with quite an elegant ‘switching’ solution:
There is a little button in the top left hand side of the chart, which switches chart types. Currently there is a normal $ chart, same one with vertical dotted lines and a candle chart. Whichever you end up on last will be your default. I prefer the one with dotted lines and once I have set it on the Disney’s page, it was applied throughout.
Assuming that Freetrade will retain the % graph and potentially add the £ one, such a convenient toggle could really work well in my opinion.