If I claim federal exemptions in bankruptcy can I claim 100% interest in assets as exempt?

Yes, says the 5th Circuit Court of Appeals, but only up to the "capped" values stated in 11 U.S.C. Sec. 522(d). See Peake v Ayobami (5th Cir. 2018).
J Thomas Black
Board Certified, Consumer Bankruptcy Law- Texas Board of Legal Specialization