Derosis Wrote:poof
I'll start by saying that typing isn't that big of a issue until you start worrying about how to maximize your points in FH, or raid battles when they're released. Typing can also be highly situational, and the general trend (from what I can tell) in JP is A > G > L/B > O, as survivability is the highest concern.
Definitely level up Melchio. Like Dowie said, he just got a 6* update in Japan and it's pretty OP. Breaker is a decent typing. I'm currently leveling a (B) Melchio myself.
Use Lancia as a healer; (A) is the best typing for her IMO. She'll get her 6* form in global in a month or two.
Levi, even though Oracle, can essentially carry you through any normal quest in his 6* form. His leader skill will be the meta for at LEAST 4~6 more months (judging by JP).
I love using Michelle as a lead, since she gives an attack buff as well. She has high REC and low HP naturally, so (O) is a.. less than desirable typing.
Duel-GX also has an amazing 6* form just released in JP - Lord or Guardian works for him. Not sure which one is better. I'm leveling a Guardian Duel-GX because my only other option is Oracle.
Tiara - like Michelle - has innately high REC and oracle sacrifices HP she needs.
I have a breaker Falma and his DEF is a bit low for my liking - Lord is probably one of his best typings. Single target BB though. I used him for Karl.
Lodin is your best choice for a rainbow lead out of the ones you have. Lord is a good typing. The added thunder element from his BB works great for me since I typically don't have a thunder unit on any of my teams.
Eze is a pretty powerful low hit count unit. One of the few who benefits from an Oracle typing.
Loch was my first awesome, super powerful unit I had on my team for a long time, so she holds a special place in my heart <3 Her HP looks lower than normal (I have a guardian) so I'm not sure it's worth investing resources into yours since you have so many other great units to work with.
Mega and Dean are really good water units. I used a breaker Dean on my main team for a long time and have no complaints, and I've only heard positive things about Mega.
Vargas and Selena work well as Lord, but IMO they can only compete with your other units as 6* form and that can get expensive, not to mention needing a miracle totem.
I've never used a Lava, but I heard it was one of the best fire units before Cayena came out.
I personally don't like the following: Weiss, Zegar, Leore, Behemoth (I have four and all are oracle

), Heidt, Sergio, Lilith, Dilma, Shida, Lemia, Edea, Agni, Lorand, Zeln. I cannot give any advice on the viability of these as I have had no experience with them.
I think that's it! Long post
*side note, running breezy beach for water spirits while I type this, and I just ran into, AND CAPTURED, three in one run.
--------------------------------------------
Well holy sh'it. 3 serin + 2 Felneus + Michelle.
Rounds were:
1) Rantoul & friends
2) Nemia + oboro + someone else
3) Melchio + 4 angels
4) Vargas (surprisingly good points, lots of spark + ele weakness)
5) Selena + Eze + Lance + Vargas