Hi Travis.
That Standalone status is normal. It usually only comes into play with managed batteries when everything is under BMS control.
DVCC doesn’t sync mppt Charge States. But with SVS and STS enabled they should all reach Absorb together. The time they spend there can be different if Adaptive algorithm is selected, so best to just set a fixed Absorb time (as a maximum). Then use Tail Amps to drop to Float. SCS is supplying a Current from the charging batteries that all can work from. You’ll need to determine that current level for yourself and enter it into all mppts. IMO it’s a far better way to gain consistency with the Abs > Float transition than with the other algorithms.