In our opinion, you want to trade pairs which work fine with all models over wide parameter space to make sure they are robust enough.
But you want to focus on Ratio strategy, fine - the database contains a Sharpe Ratio value for single ratio strategy for every pair, so you can filter and sort using this field.
Take look on public preset "Profitable pairs focused on Ratio model". Unfortunately we don't index separate CAGR and Linearity just for Ratio model.
I am not getting the exact info i want though and the process becomes very time consuming.
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Currently I run a scan and then have to test each possible pair individually. Finding a good pair is sort of a combination of searching and finding the right parameters and a little bit of luck.
We are working on an ultimate solution to this, but I will not disclose details at this moment.