Normally I'd say drop Claydol, but since you've carried it this far, I'd just make use of it. Trick Room is what you really need for those bosses who'll outspeed you, but the current moveset is good until Post Terra. After that, Explosion really isn't that great (though there's not much else until screen TMs are available).
Blaziken...you may as well run Chorcoal Flare Blitz. Flare Blitz and Hi Jump Kick complemented with Bulk-up basically make any "challenge" in Reborn a complete joke which is why a lot of people are against Blaziken. Don't bother running weak moves as it's meant to hit really hard before dying. It actually ranked above Gyarados in most OP mon.
For Scrafty no DD means you'll want to definitely give Claydol TR to give this guy his time to do damage. If you really want to keep focus punch, you'll have to get Substitute from the Game Corner as it's worthless without it, but imo Hi Jump Kick pretty much does it better. Fire Punch is a drop as well...because there's really not that much use for it when you have OP blaziken over there (then again why are you using Scrafty when you have a better fighting type). If you want to keep Scrafty, Facade (for the toxic orb in E16), Head Smash, and if you go TR Headbutt wouldn't be a bad option.
Floatzel fell from grace like pre-Aya so yeah...he's really bad for your pretty frail team. Walrein is honestly your best bet, but if you don't like him, Kingdra (takes a bit of work to get the Dragon Scale) will fix that issue. You could also grab a bulky water from your PC if you got them Pre-Agate like Blastoise, Rotom-Wash (requires Upgrade), or maybe the mystery egg (there's a long list of bulky water types so just pick one you want).
Ground and Rock are a bit harder to come by, but since you already have Ground, I hope you got a couple fossils like Tyrantrum or Cradily as the only other option is Rhydon. Sheer Force Druddigon isn't the first option that comes to mind, but it's probably one of the better to help you out at this time as it hits hard and won't die in seconds.
Helioptile...WHY DO YOU NOT HAVE SURF ON IT? You may want to get a Politoed in the next episode as Drizzle will make full use of this monster. Volt Switch ain't super useful if you play on Shift so probably get rid of it and T-wave. Thunder and Surf is all you'll need with Drizzle, but a good HP (if you don't, Dark Pulse ain't a bad option) and you kind of have to choose T-wave or electric terrain depending on your playstyle to get better use out of it. But seriously, give that thing Surf.
I don't know if you made it to the end or not...as you're levels are a little low, but it doesn't matter as I based it around Agate's availability mons on what to pick. It's not the worst team I've seen, but I have no idea how you put up with Onix for that long considering just about every rock type around is better.