OK, if you want to WIN with a CP then pick

. Unless you actually know how to use a counterpick (like secondary knowledge) don't try to CP at all really because if you can't consistently do the GR then these MUs become much easier for

. And you have to actually LAND the grab
. And
you can't just try to run up and grab him.

and

both have about 2 frames margin for error so BE SURE to buffer it (
never use a shieldgrab). In fact, you should
buffer everything.

has a grab release semi-infinite. End the GR with Dsmash (or Fsmash if he's trying to DI out far).

has a cargo infinite but you must pivot repeatedly and be able to buffer a pivot, then a grab otherwise Lucas will slide far out of his grab range. End with Dsmash.

has GRDACUS and regrab (air release).

has Fsmash

has DR Fsmash and Usmash (air release)

has a very low sliding dash regrab which functions very similarly to a standing regrab, and it's possible to try for an air release (although

can be grabbed out of that too I believe)
And don't forget the wall infinites on

and
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for anyone with a frame 11 or less grab.
No-one else has a MU changing GR, really.

can alternate between standing regrab and dash regrabbing but it's probably much better for him to just Dthrow CG.
P.S.

has the same air release as

.