Blood tests showed high antibodies to: ana, ssdna, sm, rnp/sm, ssa(ro), ssb(la), scl-70, centromere. is this likely lupus or a different automimmune?

Likely SLE.: Sounds most c/w sle but would have to know your clinical picture and see how you do over time. May represent mctd.

Prob false positive: To have all these antibodies to be positive is suggestive of a false positive result. Virus infection can cause similiar findings. Ultimately these results have to be interpretted in the context of your doctor's findings. Talk to your doctor.