I don't know about happy frog but I DO know that light warrior is for seedlings. I'm fairly sure that happy frog will be fine too. Muddy may clear things up better.
If those are my choices, I vote HF with some extra perlite... It's not hot and has myco's and humic acid which is good for seedling performance. It outperformed everything else I have used and I never personally had any negative issues from it.
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