Keysend capability apps:

Zeus - yes

Blixt - yes

Breez - yes

Thunderhub - yes

RTL - yes

FullyNoded - yes

Clams - yes

BitBanana (ex-Zap) - yes

Phoenix - no

Bluewallet - no

Electrum - no

OBW - no

All the rest are not considered LN wallets...