Kowalswi's website had some very nice articles on building decks on alternative formats. It's still untested how effective these would be against bots on a time constraint, but they have all been put to the test on high level play.

His website was taken down on the beginning of 2022 as he quit KARDS, but the pages were saved by the Internet Archive. Links below:

https://web.archive.org/web/20211030145033/https://kowalski-analysis.com/2021/10/30/another-look-at-the-alternative-formats/ https://web.archive.org/web/20210521052114/https://kowalski-analysis.com/2021/05/20/time-for-pauper/

These include decklists (and links for these decklists on the Kards website, which includes kredit cost analysis etc.)