For amd cards, claymore took most of algos sticked to nvidia like blake and some algos before. He also did Neoscrypt miner for amd videocards. For now, amd as universal as nvidia cards. So if ETH gpu mining dies, there are lot of algos, even excluding monero and ETH forks
If Ethereum and Monero are out of the mining business for graphic cards I only see the Zec as the most valuable option to mine after Ethereum and Monero and it is not looking as profitable as Ethereum or Monero at all.
I tried mining Musicoin with my 1060 3gb as in Windows 10 they can't mine ethereum anymore and profitability was just a bit less so I don't think there are a lot of other coins to mine except Zec and coins which are on Equihash algorithm like Bitcoin gold.
I guess ASICs were also try to create a miner for Neoscrypt, they are not ASICs proof like the other big Coins
Yet, they can fork to kick ASICs out, FPGA is much more flexible
ETH and Zec are not interested doing forks as for them they don't see it as a priority
for sure, there are already ASICs mining equihash out there