let's narrow to these:

#'clojure.core.protocols/CollReduce
#'clojure.core.protocols/IKVReduce
;; 1.10:
#'clojure.core.protocols/datafy
#'clojure.core.protocols/nav

#'clojure.core.reducers/reduce

;; 1.8
#'clojure.core.server/repl
#'clojure.core.server/repl-init
#'clojure.core.server/repl-read
#'clojure.core.server/start-server
#'clojure.core.server/start-servers
#'clojure.core.server/stop-server
#'clojure.core.server/stop-servers

;; 1.10
#'clojure.datafy/datafy
#'clojure.datafy/nav

;; prob 1.6
#'clojure.instant/parse-timestamp
#'clojure.instant/read-instant-calendar
#'clojure.instant/read-instant-date
#'clojure.instant/read-instant-timestamp
#'clojure.instant/validated

#'clojure.main/err->msg
#'clojure.main/load-script
#'clojure.main/main
#'clojure.main/repl
#'clojure.main/repl-caught
#'clojure.main/repl-exception
#'clojure.main/repl-prompt
#'clojure.main/repl-read
#'clojure.main/repl-requires
#'clojure.main/report-error
#'clojure.main/skip-if-eol
#'clojure.main/skip-whitespace
#'clojure.main/with-bindings
#'clojure.main/with-read-known

#'clojure.repl/apropos
#'clojure.repl/dir
#'clojure.repl/dir-fn
#'clojure.repl/set-break-handler!
#'clojure.repl/source
#'clojure.repl/source-fn
#'clojure.repl/thread-stopper