Buccaneer was 63,000LB if memory serves me right.
A-5 Vigilante max TO wt was slightly over 63,000 lbs. F-105 was somewhat heavyish also.
Re: USMC F-4 (3MERs, 2 TERs config).......A manual bomber in an F-4 with 24 MK-82s actually had a chance of hitting something for a change.
(The USAF in VN had a 3 or 5 SUU-23 config on some F-4Ds.
Now that's a gunfighter.)