So I've come back to have another go at this game after around 3 and a half years since I'm playing fates again. Been going for a few weeks now, levelling units, clearing story/paralogues on normal and trying out the various event formats, feeling like I'm not really understanding most of them. Also been working through Heroes Path - currently on tier 14 and just need to beat the first squad assault to finish that.

This is my current collection of 5* units:
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So just hoping for some general help for things like who's good in what formats (in as close to their base form as possible), some possible team synergies I might have available, how I'm best to be progressing forward and what to work towards for being able to clear lv40 stages, and what I might want to summon for in the near future (next legendary/mythic banner?)