Ugh, the non-mutations LF kept coming back even though I flushed my sim earlier.
My sim had a spiral shape and about 30 Einstein had a foothold on one end of it. Then the algae mutated into tiny clumps and all other bots started to die, so I removed the spiral shape and turned toroidal on.
There's currently a bunch of Catapillers that have been surviving since the sim start, a couple mutate and Lionfish that refuse to die, and sporadic Einsteins and Multiply4 still coming from the teleporter.